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Dryline Mattress Protector

Pronounced [dri-line]
You've invested in your sleep, now protect it. The Dryline Mattress Protector provides performance and protection in one package to keep your mattress looking and feeling brand new without the heat buildup. The patented Outlast® temperature regulating technology ensures space age comfort and temperature control, while a silent layer of waterproof fabric provides a physical barrier that shields your mattress against dirt, spills, and normal wear and tear. It's NASA engineered performance and protection you can count on 24/7 for a better night's sleep.
  • 100% waterproof protection preserves your mattress and extends its lifespan
  • Engineered with NASA-approved Outlast® technology for unmatched heat management
  • Made in the USA
  • A polyester / lycra cover provides durable yet silent comfort
  • Fits any mattress up to 16 inches deep
  • Features the Gold Comfort Rating
  • Hypoallergenic and easy-care – just throw it in the washing machine

Dryline Mattress Protector

39” x 75” x 16”
Twin XL
39” x 80” x 16”
54" x 75” x 16”
60” x 80” x 16”
77” x 80” x 16”
73” x 84” x 16”
From $129.00

Same as $0.35 a night for 365 nights

Free shipping

Free shipping

60 Night Trial

60 Night Trial

Outlast Technology

Keep Your Cool

Rest easy knowing your mattress is protected from the unknown. The Dryline Mattress Protector is designed to be the perfect blend between comfort and protection. Gone are the days of waterproofing your bed with plastic. The soft, stretchy, polyester / lycra knit cover lets you sink into your mattress without any unnecessary noise or ruffling. A heavy coating of NASA-approved Outlast® technology provides a unique heat managing ability that reacts to temperature fluctuations as you sleep for all night comfort.

A soft, comfortable, cool layer with 100% waterproof protection sets the foundation for a better night’s sleep by keeping your mattress cool and protected while complementing the other layers of your Slumber Cloud sleep system.

Dryline mattress protector

Out of this world comfort

Truly born from space, Slumber Cloud bedding is infused with the same temperature regulating technology NASA astronauts used in their spacesuits. This patented technology, called Outlast® technology, is made up of thousands of microscopic “beads” called Thermocules™. Each individual bead is set to a specific temperature to counter any temperature fluctuations you might experience during the night. As your temperature increases, the beads absorb and store any excess heat away from your body to keep you cool. If your temperature drops, the beads release the stored heat back to you to keep you at the perfect temperature. The end result is a better night’s sleep with bedding that helps you sleep more comfortably, sweat less, and wake up feeling refreshed.

Outlast Space certified


Cools Hot Sleepers

It’s just plain frustrating to keep waking up night after night, soaked with sweat and unable to get back to sleep. Many people of all ages and body types suffer from night sweats. Outlast® technology keeps you at the most comfortable temperature throughout the night… so you sleep cooler and more comfortably.

Helps With Hot Beds

Love your bed, but not all the heat buildup? Although they can reduce pressure points, beds with memory foam often get uncomfortably hot. Outlast® technology helps prevent the heat from your mattress from building up. You'll still enjoy the comfort of your mattress but without that hot, sweaty feeling.

Controls Humidity

When humidity develops in your bedding, your body sweats raising the humidity even higher. This causes you to wake up and push the covers off to "release" the humidity. Later you wake up again, this time too cold without the covers. Outlast® technology mitigates heat and humidity so there's no more pushing and pulling at the covers.
Dryline mattress protector

Everything-proof Your Mattress

Don’t lose sleep over spilled milk. A 100% waterproof lamination keeps spills out while still letting air in, so your mattress stays cool, clean, and comfortable for longer. And when they do occur, spills are absorbed without leaking through so your mattress will stay clean no matter what accidents happen.

Thoughtful Details

More than cooling waterproof protection, it’s the little things that make the Dryline Mattress Protector the best cooling mattress protector on the market.

Stays in place

Stays In Place

With a unique elastic skirting and a 360-degree grip, it perfectly hugs any mattress as short as 5’’ and up to 16”.


A Tailored Fit

Silent and stretchy, the polyester / lycra knit conforms to your mattress for a flawless fit and feel regardless of your mattress type.

Easy care

Easy Care

If an accident does happen, or you need to freshen up your mattress protector, simply throw it in your home washer and dryer and follow the care instructions on the tag.

Frequently Asked Questions

Free shipping

Free shipping on all orders

Don't pay for shipping! All U.S. orders are shipped right to your door free of charge.


Try it risk free for 60 nights

Sleep on it, wash it, and really put it to the test. If you don't LOVE your new bedding, simply return it for a full refund. No questions asked!


Pick and choose each layer of your bed with the Slumber Cloud Bundle for a truly custom "sleep system" designed with space age temperature regulating technology for an unmatched sleeping experience. Plus you'll save 10% versus buying separately when you bundle $400 or more of products together.

Stratus Sheet Set

From $139.00

Cumulus Comforter

From $99.00

Nacreous Pillow Cover

From $69.00

Cirrus Pillow

From $49.00
Stratus Sheet Set

Stratus Sheet Set

From $139.00
More than thread count, we made our sheets with threads that count. Soft, cool, and perfectly weighted, these sheets are the ideal blend between the softness and durability of cotton and the unique temperature regulation of Outlast® fibers to help you get the most comfortable night's sleep possible.
Cumulus Comforter

Cumulus Comforter

From $99.00
Born from space, this comforter automatically absorbs, stores, and releases heat as the temperature under your covers changes. It fights off the one thing that makes you sweat at night - humidity. You can finally stop pushing and pulling the covers on and off all night trying to find the perfect temperature.
Nacreous Cooling Pillow Cover

Nacreous Pillow Cover

From $69.00
Our best seller, this set of 2 pillow covers zip over your pillows to automatically adapt to temperature changes for cool comfort throughout the night. These state-of-the-art pillow covers incorporate dual layers of Outlast® temperature regulating fabric so you are always sleeping on the cool side.
Cirrus Pillow

Cirrus Pillow

From $49.00
With NASA-inspired technology built right into the Cirrus Pillow, there's no more flipping to the "cool side". A cooling fabric shell infused with patented Outlast® technology combats heat while your choice of luxury core fibers provide the perfect amount of support for any sleeping position.

You're just $400.00 away from saving 10%


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Free shipping

Free shipping

60 Night Trial

60 Night Trial

In the press

A favourite among our consumer testers, who said they wanted to keep it for themselves

  • Good housekeeping
  • Prevention
  • Sleep judge
  • Sleep sherpa