Name: BackFlex™ 3 Adjustable Base
Brand: Back Science
SKU: backsci-matt
Price: 2024.0 USD
Availability: OutOfStock

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The Best Mattress for Back Pain Back Science® Mattress

BackFlex 3 split king adjustable base with one side adjusted up in bedroom

BackFlex 3 split king adjustable base with one side adjusted up

BackFlex™ targeted lumbar support adjustment technology for back stretch and back support

BackFlex 3 adjustable base simple remote with zero gravity and memory buttons.

Adjustable Comfort

25-Year Warranty

Free Shipping

Zero Gravity

Adjustable Comfort

25-Year Warranty

Free Shipping

Zero Gravity

Supreme Luxury Experience

BackFlex™ Back Stretch Programs
Targeted Adjustable Lumbar Support
Therapeutic 3D Wave Massage
Separate Head & Feet Adjustability
Zero Gravity Position
Underbed Lighting
Dual USB Outlets
Easily adjustable leg heights

Exclusive Back Stretch Program

The BackFlex™ 3 is the only bed on the market to offer our exclusive patent pending BackFlex™ stretch program, which uses our advanced targeted lumbar support to gently lift and extend the back, then bring the spine into flexion to increase flexibility and reduce pressure build-up. It is a great way to warm up your back before you get out of bed to avoid morning stiffness and help keep your back on track!

Targeted Lumbar Back Support

Only the BackFlex™ 3 offers specific targeted adjustable lumbar support that allows you to dial-up the perfect positioning and comfort for your lower back if you are flat, seated or lounging in between.

Weightless Spinal Positioning

At the touch of a button, the bed will raise the feet and head to that true zero gravity positioning that gives the most weightless position for your spine and the best way to reduce pressure on your lower and upper back.

Twin: 38"W x 75"L x 15"H

TwinXL: 38"W x 80"L x 15"H

Full: 54"W x 75"L x 15"H

Queen: 60"W x 80"L x 15"H

Eastern King: 76"W x 80"L x 15"H

California King: 72"W x 84"L x 15"H

Split E-King: 2X (38"W x 80"L x 15"H)

Split Cal-King: 2X (36"W x 84"L x 15"H)

Easily adjustable leg heights (measured from floor to top of platform): 10", 12.5", or 15"

Not zero clearance compatible

$2,024 - $2,924

-ONLY-

-WAS-

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Product variants

Out of Stock Select a Size Add to Cart

We are currently out of stock of TwinXL, King (Synced), and Split King sizes of BackFlex 3 adjustable bases. We are expecting more stock around march 2026, thank you for your patience.

*due to shipping costs, this product may only be purchased with a mattress.

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Adjustable Comfort

25-Year Warranty

Free Shipping

Zero Gravity

Adjustable Comfort

25-Year Warranty

Free Shipping

Zero Gravity

Back Stretch Program

BackFlex™ technology gently compresses and stretches out your back with a relaxing, automated program — similar to an inversion stretch but much less intense.

Targeted Adjustable Lumbar Support

Unique, targeted lumbar lift technology adjusts on-the-fly to give you the support you need while raised or flat — with significantly improved angling and positioning.

Therapeutic 3D Wave Massage

Offers therapeutic massage modes with different intensities using 3D wave technology to provide calming sensations and full-body relaxation.

Weightless Zero-Gravity

Zero gravity mode makes you feel weightless — taking pressure off the lower back, improving circulation, and positioning you for the perfect cozy night in.

Separate Head & Feet Adjustment

Allows you to raise and lower the head and feet sections independently, and bends at the knee to match your body's natural resting position and promote circulation.

Doctor Designed & Recommended

Designed and tested by our head of product development, Dr. Rick Swartzburg, D.C. — recommended by a growing list of doctors and healthcare workers alike.

Adjustable Leg Heights

The legs come in segments allowing the total height of your base to be adjusted during installation, so your bed can be as high or low as you like it.

Heavy-Duty Motors

Heavy-duty motors lift up to 850lb (per side in split king sizes) so you don't have to worry about your base giving out on you like cheaper alternatives.

Four USB Ports

Four convenient, easy-access USB ports (2 on each side) so you don't have to get out of bed to charge your phone, tablet, or other device.

Under-Bed Lighting

LED under-bed light illuminates your path in the night without disturbing your partner's sleep, so you don't have to trip over objects in the pitch black darkness.

Exclusive Back Stretch Program

Patent-pending BackFlex™ stretching program works with our proprietary targeted lumbar to gentle stretch your back first thing in the morning and deliver the tension release you need to start or end your day.

Therapeutic 3D Wave Massage

Therapeutic vibration massage sends waves of soothing vibrations and relaxation throughout the bed, releasing stress and tension from your mind and body.

Adjustable Leg Height

The base's legs come in sections which can be easily added or removed during installation to adjust the total height of your bed, so you don't have to worry about a thicker mattress making the bed too tall, or having difficulty getting in and out of your bed.

Improved Targeted Lumbar Support

BackFlex™ 3 uses the latest technology to more carefully target your lumbar at a precise angle which creates a better lumbar support adjustment vs other bases, allowing you to fine-tune your back support on-the-fly to fit your exact needs.

BackFlex™ Back Stretch Program

Patent-pending BackFlex™ back stretch program uses our proprietary targeted lumbar adjustment bar to gently compress and pull outward on your spine, providing traction similar to an inversion stretch but much less intense, and feels more like a massage. Try it first thing in the morning to start the day fresh, or when your back is sore and needs extra relief.

Steep Head & Foot Incline

Fully separate head and feet elevation allows for up to 64 degrees incline on the head section and 34 degrees incline in the foot section.

Under-Bed Lighting & USB Ports

Under-bed light dimly lights your way at night so you can see where you're walking without waking your partner up or turning on bright lights. Dual USB ports allow you to easily charge your phone, laptop, or other devices without leaving the comfort of your cozy mattress.

Fits in Your Current Bed Frame

No need to toss the bed frame you love, our adjustable bases fit almost any bed frame! The adjustable base has its own legs and slots right into your frame where the mattress goes, instead of the box spring or slats your frame has now. If your bed has storage drawers or need a zero-clearance base, check out our BackFlex™ 1 & 2 models.

Industry Leading Quality

Our BackFlex™ 3 adjustable base is particularly special, using only the highest quality steel construction, heavy-duty German Okin motors, and durable electronic components to deliver lasting comfort and relief that won't fall apart like cheaper alternatives. That's why we can offer the best 25-year warranty in the industry on our BackFlex™ 3 adjustable base.