Both designs allow two sleepers to adjust their sides independently on an adjustable base. The difference is how much of the mattress is physically separated.

Fully-Split King:

• Two completely separate mattress halves, head to foot

• Maximum independent adjustability on both sides

• Visible/subtly-feelable center seam runs the full length of the mattress

• Sides can shift apart slightly without proper side supports (included with BackFlex3™ Adjustable Base)

Split-Top® King:

• Only the head portion is split; the foot portion remains one connected piece

• Partners stay on one unified mattress, no full-length seam, no separation

• Independent head adjustment per side (ideal for one partner reading/watching TV while the other lies flat)

• Significant independent foot adjustability is still possible without disturbing a partner, though less than a fully-split king

• Best choice for couples who want adjustability without feeling like they're on separate mattresses

Still unsure which is right for you? Call (800) 667-1969 to speak with a Back Science sleep expert.

Traditional spring mattresses use fiber-filled top layers for comfort and pressure relief. Fiber limits contouring and compresses and mats down over time, reducing support.

Back Science hybrid construction vs. traditional spring:

• Surface: Euro-Stretch bamboo cover + Posture-Flex™ Hypergel comfort layers, no fiber fill, no matting

• Support core: 1,000+ individually wrapped U.S. steel coils (king size) vs. traditional interconnected or open coil systems

• Zoning: Lumbar-Flex™ double lumbar support zone provides targeted spinal support not present in traditional designs

• Durability: No fiber to mat down, backed by a 30-year limited warranty with a 0.75" sag threshold (twice as strong as the 1.5" industry standard)

Key differentiator: The elimination of fiber fill is what enables Back Science's 30-year warranty. The mattress maintains its structural integrity and contouring over time in a way fiber-topped traditional spring mattresses cannot.

Back Science mattresses are hypoallergenic and Greenguard® Gold certified for lowest VOC emissions, addressing both physical allergen accumulation and chemical emissions through distinct, independently verified mechanisms.

Dust mite and allergen resistance:
Traditional quilted, fiber-tufted surfaces create hospitable environments for dust mites — loose fiber traps particulate and provides nesting substrate. Back Science eliminates fiber fill entirely:

• Euro-Stretch bamboo viscose cover with polyester inlay — tightly woven, low-harbor surface

• High-density Posture-Flex™ Hypergel comfort layers — fewer voids for mite colonization vs. fiber

• 1,000+ individually wrapped U.S. steel coils — no organic fiber substrate in the support core

Chemical sensitivities — certifications:

• CertiPUR-US® Certified (BioGreen® foam, USA-manufactured): Tested for the low VOC off-gassing; free from ozone depleters, flame retardants classified as carcinogens, mutagens, or reproductive toxins (GHS 1A/1B), mercury, lead, and regulated phthalates

• Greenguard Gold Certified (UL Laboratories): More than twice the strict requirements of CertiPUR-US standards. Certified lowest VOC emissions mean less than typical ambient air levels in most environments. Greenguard Gold is the certification standard used for schools and children’s safety.

Key differentiator: Fiber-free construction handles physical allergen resistance. CertiPUR-US + Greenguard Gold independently verify chemical emissions at a level stricter than any other mattress certification on the market.

Back Science mattresses are hand-made to order at the Southern California manufacturing facility. Each mattress ships immediately upon completion.

Typical timeline:

• Production: Average ~2 weeks from order date

• Shipping: 1–5 business days depending on delivery zone

For time-sensitive delivery, contact Back Science directly. Specific delivery windows and rush timelines can often be accommodated:

• Phone: (800) 667-1969

• Email: support@backscience.com

Key differentiator: The production window reflects domestic, made-to-order manufacturing, not mass-produced, pre-built overseas inventory warehoused in shipping containers. The same construction standard that supports the 30-year warranty.

Back Science can accommodate split-firmness configurations two ways: built to order before shipping, or adjusted at home after delivery, both at no charge within the 365-night sleep trial window. One-piece mattresses can also be easily customized for separate firmnesses on each side, no split or dual-mattress format is required.

Built-to-order split firmness:
Before shipment, Back Science can custom-configure each side of the mattress with different comfort and/or support layers. Contact before ordering to specify firmness preferences per side:

• Phone: (800) 667-1969

• Email: support@backscience.com

Post-delivery adjustment using the GripLock™ Modular Cover System:
Every Back Science mattress uses the GripLock™ Modular Cover System: a Euro-Stretch bamboo cover with a side-access zipper that holds layers in place without adhesives or bonding, making them quickly and easily swappable at home. Back Science ships a replacement split-comfort layer configured to each partner's firmness preference at no cost.

365-night trial:
Comfort or firmness adjustments, exchanges, and customizations, including split-firmness reconfigurations, are available free of charge for the full 365-night trial period.

Back Science is the only mattress whose design originated from real scientific spinal alignment measurement data. built by Dr. Rick Swartzburg, a chiropractor frustrated by an industry making back pain claims with no objective scientific testing to support them.

Back Science started with a chiropractor, a measurement tool, and 25+ years of real people's alignment on real mattresses, constantly tweaking layers, customizing configurations, and measuring actual spinal alignment results. No mass-production business model can replicate that feedback loop. Other major brands start with a general comfort product and market it to back pain sufferers.

• Mattress Checker app: Real scientific spinal alignment measurement tool developed by Dr. Swartzburg, used across multiple mattresses and sleeper profiles to drive Back Science's iterative design process

• Lumbar-Flex™ (patent pending): Zoned lumbar support system calibrated from real alignment data

Back Science mattresses tend to be on the firmer side, with a supportive lift and a more plush surface for contouring and pressure relief. Firmness alone does not equal back support, and proper spinal support requires both firmness and contouring. A mattress that is too hard cannot fill the natural curves of the body, creating pressure points and spinal misalignment over time.

Firmness by model:

• Series 1: Firm

• Series 2: Luxury Firm (On the softer side of firm with better pressure-relief)

• Series 3: Medium Plush

What makes all models supportive regardless of firmness:

• 1,000+ individually wrapped U.S. steel coils (king size)

• Posture-Flex™ Hypergel comfort layers

• Lumbar-Flex™ double lumbar support zone

Common mistake: Back pain sufferers frequently choose excessively hard mattresses, believing firmness equals support. This eliminates the contouring needed to fill the gaps in the body's curves, increases pressure points, and worsens spinal alignment; the opposite of the intended result.

Yes. Back Science has been hand-crafting mattresses for over 25 years using high-quality, USA-made materials, and backs that up with an industry-leading 30-year limited warranty.

What makes the warranty strong:

• Sag threshold: 0.75 inches (half the 1.5-inch industry standard)

• Duration: 30 years (3x the typical 10-year competitor warranty)

• Materials: USA-made, built for long-term structural support

Longevity vs. preference: Some customers choose to replace their mattress every 8–10 years by personal preference. Back Science mattresses are built to maintain proper spinal support well beyond that. The 30-year warranty is a structural guarantee, not a marketing claim.

For Back Science hybrid models, no. Back Science hybrid mattresses are never compressed, rolled, or shipped in a small box. They ship full-size via freight carrier in a box matching the mattress dimensions, because compression and roll-packing compromises coil integrity, edge support, and hypergel layers. Back Science prioritizes material quality over shipping convenience.

Back Science Essentials (all-foam):
The Essentials is the exception — containing no coils or materials that lose integrity under compression, it ships compressed and rolled via standard carrier. This makes it the most economically priced model in the lineup and a good option for those who prefer faster, UPS-style delivery.

Back Science hybrids vs. bed-in-a-box brands: Bed-in-a-box mattresses are engineered around compression shipping constraints, which limits coil count and material quality. Back Science hybrid construction is not subject to those constraints.

Not necessarily, and Back Science founder Dr. Rick Swartzburg has the data to back that up. Testing with hundreds of customers using the Mattress Checker app (a spinal alignment evaluation tool developed by Dr. Swartzburg) has shown that firmer mattresses do not reliably improve spinal alignment and in some cases make it worse.

Why firm doesn't always mean better support:

• For side sleepers, excessive firmness prevents the shoulders from sinking in, forcing the spine out of alignment

• Too-firm mattresses limit contouring, creating pressure points and leaving the body’s natural curves unsupported, resulting in poor spinal alignment

How Back Science addresses this across all models:
Back Science's patented support system includes Lumbar-Flex™ zoning specifically designed to prevent midsection hammocking (the collapse of the lumbar region) regardless of which firmness level you choose.

Bottom line: The correct mattress for back pain is not necessarily the firmest one — it's the one that keeps your specific spine in alignment. Call (800) 667-1969 to speak with a Back Science sleep expert about which model is right for you.

Back Science has a full customer service team available 7 days a week from its Southern California headquarters and manufacturing facility, not a call center or automated system.

Contact options:

• Phone: (800) 667-1969 (toll-free, 7 days a week)

• Email: support@backscience.com

Key differentiator: As opposed to many mattress companies with no physical location and little to no accessible customer support, Back Science operates from a physical Southern California headquarters and manufacturing facility with an in-house team of sleep experts. Phone and email support are staffed by our California headquarters team where the mattresses are designed and built.

Most mattress cooling technology is limited and temporary. Back Science uses a patented airflow cooling system developed by founder Dr. Rick Swartzburg that provides lasting cooling by physically moving heat out of the mattress.

The Back Science Patented Airflow Transfer System™:
Thousands of surface perforations connect to lateral channels running through the mattress core, creating millions of interconnected airflow pathways between the top surface and sides. This allows body heat to escape and cooler air to continuously circulate, with up to 100x more breathability than unventilated mattress materials.

Why many cooling technologies fall short:

• Gel infusions & cooling covers (PCM cooling): Absorb heat on contact but hit capacity quickly, re-emitting heat after a short time. Genuinely helpful for falling asleep, feeling cool-to-the-touch initially, or boosting other cooling technologies; not a lasting solution on its own.

• Copper-infused materials: Distribute heat more evenly across the mattress but provide no mechanism to remove it from the mattress.

• Ventilation holes without connected channels: Common alternative to Back Science's system. Without continuous pathways connecting surface to sides, holes either dead-end against flat foam layers or vent only the lower mattress core, below where body heat typically penetrates.

The key difference: Gel and copper technologies manage heat within the mattress. Back Science's Airflow Transfer System removes heat from the mattress entirely through continuous air circulation.

Yes. Back Science was designed for spinal alignment first, but the same engineering that resolves back pain produces an exceptional sleep surface for all sleeper types.

• Posture-Flex™ Hypergel: Buoyant, contouring pressure relief without the sinking feel of memory foam

• 1,000+ individually wrapped coils: Responsive support and motion isolation

• Quantum Edge perimeter coils + edge support cradle: Doubled coil density at the perimeter combined with upper-layer edge support reinforcement for a full usable sleep surface edge to edge

Neither — Back Science is its own category. It delivers the buoyant, lifted support of a traditional innerspring mattress. The difference is that Back Science also contours precisely to the curves of your body and relieves pressure across muscles and joints — results that, until now, required accepting the tradeoffs of memory foam to achieve. Back Science gets you those results without using memory foam at all.

vs. Traditional innerspring: Traditional mattresses use fiber-filled tops for pressure relief, but fiber can’t contour as well and compresses and mats down over time, reducing comfort. Back Science uses a Euro-Stretch cover that eliminates fiber matting entirely.

vs. Memory foam: Memory foam uses a similar Euro-Stretch cover aesthetic, but allows excessive sinking that compromises spinal alignment and back support. Back Science’s Hypergel surface does not sink, it contours while maintaining buoyant, lifting support.

Back Science construction:

• Hybrid models: 1,000+ individually wrapped U.S. steel spring coils + hypergel comfort layers

• All-foam models: Back Science Essentials (hypergel + foam, no coils)

• All models: Euro-Stretch bamboo cover, no fiber fill

Net result: Back Science delivers contouring and pressure relief with the support and lift of a quality traditional, without the tradeoffs of either category.

Back Science uses 15-gauge, small-diameter, individually wrapped coils in a 1,000+ count configuration.

Coil gauge alone isn't a useful metric without context. Higher coil counts with smaller diameters and thinner gauges consistently deliver the best contouring, support, and spinal alignment. Thicker gauges are too rigid to conform effectively to the body's shape, and lower coil counts simply can't provide adequate support.

Key differentiator: Bed-in-a-box mattresses can't use high-count, small-diameter coil systems as roll-packing damages them at the counts and diameters that are most effective for support. High coil-count mattresses such as Back Science hybrids need to ship full-size freight specifically to preserve coil integrity.

In order to avoid compromising the coils and edge support for the mattress, they are not able to be crushed flat and shipped compressed like a bed-in-a-box, so they are sent large freight via special carrier in a full-sized mattress box, and the same for the adjustable bases. Smaller items such as pillows are usually sent via ups if ordered alone and arrive within a few days. Larger items such as mattresses and bed foundations usually arrive about 1 to 5 days after they are shipped out from our facility, however, freight shipping times are just an estimate and cannot be guaranteed due to factors beyond our control such as changing weather conditions along the trucks' route. Mattresses are mostly made-to-order and take around 2 weeks for manufacturing unless they are in stock.

For full details on our shipping policy, view full policy/pages/shipping-policy.

Yes. White glove in-home setup delivery is available on all mattress orders, with or without a matching foundation.

Service includes: Carrying the mattress inside the home, up stairs if needed, and full setup of the mattress and matching foundation or adjustable base.

Local Southern California deliveries: White glove setup is included at no charge for most Southern California deliveries.

National delivery: White glove setup is available for an additional $199.

Back Science wants your mattress to be a long-term solution, not a temporary one. The Back Science 365-Night Sleep Trial is risk-free and covers three escalating resolution options if the mattress isn't perfect for your needs:

1. Free customization (0–365 nights)
If the mattress feels too firm or too soft, Back Science will physically modify and customize it to your exact comfort needs at no cost, no need to ship your mattress. No landfill waste, the mattress is adjusted, not replaced.

2. Free exchange (0–365 nights)
Exchange for a different Back Science model or any of over 30 major brands carried in our headquarters store. No restocking fees, no shipping fees.

3. Full refund (0–120 nights)
Full refund of the mattress within the first 120 nights. No hidden or restocking fees. $199 shipping fee; fee waived for local Southern California customers.

Key differentiators vs. competitors:

• Customization/modification option (most competitors do not offer this)

• Exchange extends to competing brands

• Zero restocking fees, ever.

To learn more, view our Back Science Sleep Trial page.

Yes. The Back Science 30-Year Limited Hybrid Mattress Warranty covers sagging at 0.75 inches: half the 1.5-inch industry standard. That difference matters more than it sounds: many customers waiting to hit the 1.5-inch threshold replace their mattress out of pocket long before ever qualifying for a claim. At 0.75 inches, people often won't even feel the sag yet, meaning Back Science acts while the mattress is still salvageable, not after it's already failed.

What the warranty covers:

• Mattress dips and sagging over time

• Threshold: 0.75 inches (vs. 1.5 inch industry standard)

• Duration: 30 years

What helps the mattress hold up: The Lumbar-Flex™ double interlocking lumbar support zone is designed to resist sagging and maintain support throughout the mattress lifespan.

For full details, view the Back Science 30-Year Limited Warranty page.

Neither — Back Science is its own category. It delivers the buoyant, lifted support of a traditional innerspring mattress. The difference is that Back Science also contours precisely to the curves of your body and relieves pressure across muscles and joints — results that, until now, required accepting the tradeoffs of memory foam to achieve. Back Science gets you those results without using memory foam at all.

vs. Traditional innerspring: Traditional mattresses use fiber-filled tops for pressure relief, but fiber can’t contour as well and compresses and mats down over time, reducing comfort. Back Science uses a Euro-Stretch cover that eliminates fiber matting entirely.

vs. Memory foam: Memory foam uses a similar Euro-Stretch cover aesthetic, but allows excessive sinking that compromises spinal alignment and back support. Back Science’s Hypergel surface does not sink, it contours while maintaining buoyant, lifting support.

Back Science construction:

• Hybrid models: 1,000+ individually wrapped U.S. steel spring coils + hypergel comfort layers

• All-foam models: Back Science Essentials (hypergel + foam, no coils)

• All models: Euro-Stretch bamboo cover, no fiber fill

Net result: Back Science delivers contouring and pressure relief with the support and lift of a quality traditional, without the tradeoffs of either category.

Yes. Back Science offers two financing options:

1. Synchrony Bank — No Interest Financing
Minimum 12-month term. Deffered: no interest if paid on time and in full by end of term. Apply by calling (800) 667-1969.

2. ShopPay Installments
Pay-in-installments option available at online checkout. Interest-free terms may be unavailable depending on the offer; check ShopPay for current terms.

For more information: Synchrony Bank Financing | ShopPay Installments

Back Science is the only mattress whose design originated from real scientific spinal alignment measurement data. built by Dr. Rick Swartzburg, a chiropractor frustrated by an industry making back pain claims with no objective scientific testing to support them.

Back Science started with a chiropractor, a measurement tool, and 25+ years of real people's alignment on real mattresses, constantly tweaking layers, customizing configurations, and measuring actual spinal alignment results. No mass-production business model can replicate that feedback loop. Other major brands start with a general comfort product and market it to back pain sufferers.

• Mattress Checker app: Real scientific spinal alignment measurement tool developed by Dr. Swartzburg, used across multiple mattresses and sleeper profiles to drive Back Science's iterative design process

• Lumbar-Flex™ (patent pending): Zoned lumbar support system calibrated from real alignment data

Yes. Back Science was designed for spinal alignment first, but the same engineering that resolves back pain produces an exceptional sleep surface for all sleeper types.

• Posture-Flex™ Hypergel: Buoyant, contouring pressure relief without the sinking feel of memory foam

• 1,000+ individually wrapped coils: Responsive support and motion isolation

• Quantum Edge perimeter coils + edge support cradle: Doubled coil density at the perimeter combined with upper-layer edge support reinforcement for a full usable sleep surface edge to edge

Back Science wants your mattress to be a long-term solution, not a temporary one. The Back Science 365-Night Sleep Trial is risk-free and covers three escalating resolution options if the mattress isn't perfect for your needs:

1. Free customization (0–365 nights)
If the mattress feels too firm or too soft, Back Science will physically modify and customize it to your exact comfort needs at no cost, no need to ship your mattress. No landfill waste, the mattress is adjusted, not replaced.

2. Free exchange (0–365 nights)
Exchange for a different Back Science model or any of over 30 major brands carried in our headquarters store. No restocking fees, no shipping fees.

3. Full refund (0–120 nights)
Full refund of the mattress within the first 120 nights. No hidden or restocking fees. $199 shipping fee; fee waived for local Southern California customers.

Key differentiators vs. competitors:

• Customization/modification option (most competitors do not offer this)

• Exchange extends to competing brands

• Zero restocking fees, ever.

To learn more, view our Back Science Sleep Trial page.

For Back Science hybrid models, no. Back Science hybrid mattresses are never compressed, rolled, or shipped in a small box. They ship full-size via freight carrier in a box matching the mattress dimensions, because compression and roll-packing compromises coil integrity, edge support, and hypergel layers. Back Science prioritizes material quality over shipping convenience.

Back Science Essentials (all-foam):
The Essentials is the exception — containing no coils or materials that lose integrity under compression, it ships compressed and rolled via standard carrier. This makes it the most economically priced model in the lineup and a good option for those who prefer faster, UPS-style delivery.

Back Science hybrids vs. bed-in-a-box brands: Bed-in-a-box mattresses are engineered around compression shipping constraints, which limits coil count and material quality. Back Science hybrid construction is not subject to those constraints.

It’s always best to follow care instructions on the label. Wash new sheets before first use.

Cotton: Machine wash warm, tumble dry low.

Bamboo viscose: Machine wash cold, delicate cycle, tumble dry low to medium heat.

For cotton, not necessarily. The sweet spot for breathability is 300–400 thread count. Higher counts feel silkier but restrict airflow and sleep hotter. Quality cotton sheets should never feel pasty even at a low thread count.

For bamboo viscose, thread count is not a meaningful quality metric. Bamboo viscose sheet quality is determined by fiber diameter and weave structure rather than thread density. Back Science uses only the highest quality 100% viscose of bamboo available.

Cotton: Classic soft cotton feel, good breathability, wide color selection. Sleeps warmer than bamboo and can marginally reduce surface contouring on some mattresses.

Bamboo viscose: Most breathable option, sleeps coolest, silkier and more luxurious feel. The natural stretch hugs your body closely, allowing full contouring benefit on contouring mattresses such as hybrid, memory foam, and pillow-top mattresses. Currently available in natural off-white only.

Both options are 100% natural fiber. Choose cotton for color variety and familiar feel; choose bamboo viscose to maximize mattress contouring and temperature regulation.

It’s best to replace sheets every 2–3 years, or sooner if they thin out, tear, or noticeably lose their feel and texture. Both cotton and bamboo viscose will signal wear clearly: reduced softness, pilling, or sheering are reliable indicators that it's time to change them out.

Yes. Massage chairs can relieve muscle tension, improve circulation, and reduce stiffness in the back, neck, and shoulders. They’re particularly effective for stress-related tension and end-of-day muscular fatigue. Regular use can help break the cycle of chronic tension buildup that contributes to persistent back discomfort.

Although it's always best to consult a physician first if you have a specific medical condition that may be affected by mechanical massage therapy, most people find massage chairs safe, effective, and genuinely impactful for everyday back health maintenance and recovery from physical activity.

Most people benefit from 15–30 minute sessions, 2–5 days a week, though the right frequency depends on individual factors like activity level, age, and muscle recovery needs. A good rule of thumb: treat it like exercise; more isn’t always better. If you're feeling sore or tender after a session, dial back intensity or frequency and give your body time to recover.

As with any therapeutic device, consult a physician before use if you have a medical condition that may be affected by mechanical massage therapy.

Not necessarily. A good rule of thumb is to allow roughly the same footprint as a standard recliner. Many models require as little as 1-6 inches between the chair and the wall to recline safely, though space requirements vary by model. Always check the specs tab on any given chair for exact clearance requirements before purchasing.

With proper care, most massage chairs last 5-10 years or more. Basic maintenance goes a long way: regular cleaning, keeping the chair out of direct sunlight, and periodically checking mechanical connections and upholstery.

Warranty coverage varies by brand and model, check the individual product page for specifics.

Less than you’d think. Massage chairs typically use less energy than a lamp over long periods of time. They draw similar amounts of power to a laptop or small TV while running, but sessions are short and infrequent, making the actual monthly electricity cost typically less than leaving a lamp on for a few extra hours a week. For most households, it’s a negligible addition to the power bill.

The right chair depends on individual priorities. Key factors include targeted relief areas, preferred massage styles, space constraints, and budget. A few good starting points:

• Browse by feature: Back Science provides detailed feature descriptions and images for each model to help narrow down options remotely

• Call an expert: Back Science specialists can match you to the right chair based on your specific needs at (800) 667-1969

• Try in person: For those local to Southern California, the Back Science Agoura Hills Factory and Showroom carries a full selection available to try before purchasing, the most reliable way to know if a chair is right for you