Sleep Cooler All Night Long

Back Science™
Kool-Flow™ Mattress Protector

$179.99 - $299.99





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New GreenShield® Eco-Friendly Water-Resistant Technology

GreenShield® eco-friendly technology offers a breathable way to add water-resistance to our organic cotton fabric to help protect your mattress for years to come! Our GreenShield® finish is permanent and won't wash away over the life of the protector.

100% Organic Cotton Material

Our Kool-Flow™ protector uses a stretchable cotton material that is 100% Organic. This provides a soft and luxurious feeling surface to your bed while being 100% made in the U.S.A. for quality and durability that can't be beat. Our mattress protector is machine washable, hypoallergenic, and non-toxic, as well as Greenguard® Gold Certified for lowest VOC emissions (toxic off-gassing), passing the highest standard for schools and children indoor air quality. Total content of materials: 52% Organic Cotton (top surface), 47% Polyester (fitted sides), 1% Lycra (for stretch).

100% Organic Cotton Kool-Flow™ Mattress Protector

The first mattress protector made for gel-type beds and other types of contouring mattresses when you don't want the protector to take away from the mattress comfort and support! Organic cotton surface is soft and luxurious feeling and 100% made-in-USA. Perfect for gel, memory foam, pillow-tops, latex mattresses, foam mattresses, airbeds, and other conforming mattresses. Durable and machine-washable with GreenShield® finish that is permanent and won't wash away over the life of the protector.

The Problem

Gel-type, memory foam, and pillow-top mattresses can relieve pressure more effectively, but other mattress protectors will take away from the comfort and lack of conformity and sleep hot as they protect the bed with an inner-liner that does not breathe and lacks airflow.

The Solution

The Kool-Flow™ Organic Cotton Memory Foam Mattress Protector with GreenShield® is the first product to offer water-resistance while providing stretch comfort without having to use any kind of non-breathable liner.

Here's How We Did It

If you've ever wondered why your bed is not as comfortable as it was in the showroom, you can likely attribute it to the fact that your mattress protector doesn't stretch and tightens up the surface feel of the bed. Now you can avoid this problem! Our Kool-Flow™ GreenShield® Organic Cotton Mattress Protector has full stretch to allow it to conform with the mattress. However, there are some protectors on the market that allow a stretch, but use a non-breathable liner to offer water-proofing. Water-proof protection is a good feature, but it comes at the expense of making your body feel like it is melting when the heat won't dissipate and your skin cells are screaming for oxygen! Don't believe these water-proof lined protectors' hype that say they are breathable, since they really do not allow for proper airflow (just try to blow air through it and see for yourself). With our eco-friendly GreenShield® water-resistant finish, our Kool-Flow™ micro-vented fabric maintains it's breathability. Sure, it's not totally water-proof to 2 meters like a heat generating liner would be, but its effective water resistance does cause liquid to bead up and prevents spills and stains from penetrating your mattress. Our mattress protector will keep your sweat and skin oils out of your new mattress, which is the primary job of a mattress protector, while still offering you water-resistant spill protection and keeping you cool in those hot hot summers! The surface of the protector is 100% Organic Cotton, the fitted sides are polyester, and 1% lycra, which is used to allow for the stretch fit to the mattress below.

Frequently Asked Questions

Answers to some of the frequently asked questions are customers have about the Back Science™ Bed and the technological innovations we utilize. Have a question not on this page? Feel free to send us an email to or give us a call at (800) 667-1969 to speak with a sleep expert who can personally assist you in finding the perfect fit and answer any questions you have about our products and services.

Top Reviews

Ian F, January 23, 2024

5 out of five star rating on Trustpilot

Update: After 2 months my wife's back pain at night is gone! Thank you Dr. Rick and the incredible team at Ultrabed for your recommendations and expertise in finding us a great Back Science mattress!

Back Science Review Image of Customer in Showroom

My wife and I just visited the Ultrabed showroom in Agoura Hills, CA. What a great experience! Dr. Rick (the owner) and Jordan (salesperson), were patient, helpful, and no-pressure. They listened to our concerns regarding my wife's back pain with our current mattress, and as a chiropractor Dr. Rick was able to recommend various brands of mattresses and explain their design attributes, heat conduction characteristics, and features. Ultimately we settled on a custom Back Science mattress which is Rick's patented and proprietary mattress. We are looking forward to taking delivery in a few weeks and getting more restful nights of sleep.

The showroom is conveniently located off the 101 freeway, with ample parking, gentle music, a water feature, soft lighting, and a clean aesthetic. It's obvious this company cares about their customer experience and stands by their products. Highly recommend!

Lauren Dedow, February 16, 2024

5 out of five star rating on Trustpilot

I'm a stomach sleeper so finding a mattress that is both firm enough, but also cushioned enough for my hip and shoulder pressure points is always a challenge. The folks at Ultrabed in Agoura Hills, CA were amazing. They let me try out every firm mattress they had and explained the differences between them. I settled on the Back Science Series 2, it has the perfect combo of firmness and cushioning. The lumbar support is great and helps keep my hips elevated properly and the gel foam topper gives just the right about of cushion without feeling like I'm drowning (a relief after having achy hip pressure points every morning from my old mattress). The edge support and motion isolation are also great. The delivery and set-up was super easy and they even called to check-up on me after a few weeks of sleeping on the new mattress to see if everything was feeling good. The only thing this magical mattress couldn't do was convince my cat not to wake me up at 5 am.

Back Science™ Mattress Review Photo

Mary Linn, November 19, 2023

5 out of five star rating on Trustpilot

I found our mattress by going to the local mattress store and trying it out. The salesperson listened to our needs, he was most helpful and knowledgeable, explaining which mattress we would most benefit from. We went with the Back Science Series 2 Mattress and the Adjustable Bed with Lumbar Back-Flex Technology.They offered a good return/exchange policy in place in case it did not work out. About 2 months later, I received a phone call to see how satisfied we were with the bed. I shared the bed is amazing, especially how the adjustable bed cradles you but I would have liked it to be a little firmer along the edge. They scheduled the mattress to be the same day, pick up/return, so to give it the firmer support we were looking for. We could not be happier with our Back Science Series 2 Mattress and the service was over the top!

Better Business Bureau Hall of Fame

For over 23 years our company's high level of customer care has earned us an A+ rating from the Better Business Bureau. As well, we have become a 2012 Hall of Fame member with our exceptional customer service.

*The Patented Airflow Transfer System Technology is protected by US Patent No. 7,334,280

**Back Science™ is a trademark of Relief-Mart Coreporation, Whereas Sleep Number® is a registered trademark of Sleep Number Corporation. All mentions of Sleep Number on this site are for the purposes of comparison and review.

***The BackFlex™ Back Stretch Program on our adjustable bases has a patent pending and is the sole intellectual property of Relief-Mart Corporation.

****Any copyrighted materials used on this site without the express permissions of the copyright owner are protected by fair use law. Under section 107 of the Copyright Act of 1976, allowance is made for "fair use" for purposes such as criticism, news reporting, teaching, scholarship, education, and research.