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Cumulus Comforter

Pronounced [Que-mew-lus]

Born from space, the Cumulus Comforter uses Outlast® technology originally developed for NASA to control the microclimate of your bed (the space between your mattress and top covers). By automatically absorbing, storing, and releasing heat as the temperature under your covers changes, this comforter fights off the one thing that makes you sweat at night - humidity. With an improved microclimate due to the use of Outlast® technology, you can stop pushing and pulling the covers on and off all night trying to find the perfect temperature.

  • Two fill weights to choose from: lightweight or a 3 season comforter
  • Hypoallergenic, patented ClimaDry™ by Outlast is a polyester fiberfill that provides a down-like feel while regulating heat and moisture as you sleep
  • Premium fibers give the ideal balance of comfort and weight
  • 300 thread count, 100% damask cotton for soft, breathable comfort
  • No more pushing and pulling at the covers trying to find the perfect temperature
  • Box stitching keeps the fill from shifting and eliminates cold spots
  • Easy to care for – just throw it in the washing machine

Comforter

Twin
68” x 88”
Twin XL
68” x 88”
Full
90” x 98”
Queen
90” x 98”
King
104” x 98”
Cal-King
104” x 98”

Duvet Cover

Twin
77” x 87”
Twin XL
77” x 87”
Full
91” x 99”
Queen
91” x 99”
King
109” x 99”
Cal-King
109” x 99”
Add a cover
From $99.00

Same as $0.27 a night for 365 nights


Free shipping

Free shipping

60 Night Trial

60 Night Trial

Don’t Sweat It

Pushing and pulling at the covers is typically a result of humidity developing in your beds microclimate, a.k.a the space between your mattress and your top cover. To stabilize humidity and reduce sleep disruptions, the Cumulus Comforter harnesses the moisture regulating power of ClimaDry™ by Outlast. We carefully encased this space aged fiberfill in a soft and breathable 300 thread count 100% damask cotton outer shell. The result is a perfectly weighted comforter that keeps you consistently comfortable and cozy, but never clammy.

The perfect complement to the rest of the Slumber Cloud sleep system, a proactive approach to humidity control means you’ll spend more time sleeping and less time pushing and pulling at the covers.

Humidity

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

WHY WE USE OUTLAST® TECHNOLOGY

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.
Slumber cloud bundle

What Dreams Are Made Of

Gone are the days of throwing off the covers or sticking your leg out to cool down. Ideal for those sleepers who want a traditional comforter without all the heat and moisture build-up, the Cumulus Comforter utilizes ClimaDry™ by Outlast to provide the feeling of natural down feathers while proactively managing heat and moisture build-up to reduce tossing, turning, and throwing off the covers while you sleep. Wrap yourself in "cloud-like" coziness for a great night's sleep. With two fill powers to choose from, it’s easy to pick the perfect weight for your needs.

Cumulus lightweight comforter

Lightweight Comforter

A lightweight option that you can still leave on your bed year round, the Lightweight Duvet is designed to reduce overheating and sweating before you get too hot. You'll spend more time sleeping and less time pushing and pulling at the covers.

Cumulus comforter

Comforter

More of a 3 season comforter, this option adds the weight you want on your bed without any of the excess heat and moisture buildup. Ideal for sleepers who like a bit more weight on top of them or who live in colder climates when the outside temperatures dip below zero and the house just can't stay warm, but still don't want to wake up in a hot and sweaty mess.

Thoughtful Details

It doesn’t stop at the humidity management. It’s the little things that make the Cumulus Comforter the perfect blanket for your bed.

Stays in place

Fill Power

Your choice of ClimaDry™ polyester fiberfill weights lets you pick the best balance of weight and temperature regulation for your needs.

Breathable

Breathable Outer Cover

The 300 thread count, 100% damask cotton cover is soft to the touch while still allowing airflow. Or pair the comforter with the Stratus Duvet Cover for increased temperature regulation.

Easy care

Easy Care

When it’s time to freshen up your comforter, simply throw it in your home washer and dryer and follow the care instructions on the tag.

Stratus duvet cover

We’ve Got You Covered

Protect your comforter while adding another layer of temperature regulation for maximum heat absorption capabilities. The Stratus Duvet Cover is designed to work in unison with the Cumulus Comforter to proactively manage the microclimate of your bed. A unique blend of NASA-engineered Outlast® fibers adds additional temperature regulation while premium cotton gives softness and durability. Designed to fit over your comforter, this cover sets the ideal conditions for a cooler, deeper sleep to put an end to sleep disrupting overheating and humidity build up while matching your sheets.

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.

Promise

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!

BUILD THE BED OF YOUR DREAMS

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.

Mattress Pad

From $129.00

Stratus Sheet Set

From $139.00

Nacreous Pillow Cover

From $69.00

Cirrus Pillow

From $49.00
Mattress Pad

Mattress Pad

From $129.00

The core piece of bedding to sleep at the perfect temperature without that hot, sweaty feeling. If you need the most temperature regulation, the mattress pad is right for you. If you need 100% waterproof protection that stays cool, choose the protector.

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.

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.

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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