Core Pillow Covers

Experience space-like comfort with our Pillow Covers, featuring Outlast® fabric for cool, adaptive sleep. Revolutionize your night's sleep today!

- Proprietary Outlast® lining fabric for maximum heat management and added comfort

- Zippered enclosure transforms your existing pillows into performance "cooling" pillows

- Designed to work even when used underneath your pillowcase

- Oeko-Tex Standard 100 Certified Technology

- 300 thread count 40% Outlast® viscose / 60% cotton outer fabric

- 100% polyester non-woven lining fabric with Outlast® Technology coating

Basic Care:
Machine wash cold water on a gentle cycle with a mild detergent and with like colors only. Tumble dry low heat until completely dry. Remove from the dryer immediately. Only use non-chlorine bleach when needed. Do not dry clean. Do not iron.

Pro Tip:
Pillow covers should be washed every 2 weeks. Do not iron, bleach or dry clean your pillow covers.

Standard - 21” x 29”
King - 21” x 37”

All U.S. orders are shipped right to your door, free of charge.

Sleep on it, wash it, and really put it to the test for 60 nights! If you don’t love your new bedding, just return it for a full refund. No questions asked!

Why You'll Love It:

Like mini spacesuits for your pillows.
No More Flipping To The Cool Side

Even the hottest of sleepers can stay cool and comfortable all night long. With two layers of Outlast® fabric, these cooling pillow covers will help keep your head at the perfect temperature all night while complementing the other components of your Slumber Cloud sleep system.

Zippered Enclosure

It's never been easier to turn your existing pillows into "cooling" pillows. Simply zip the cover over your pillow for a NASA-engineered temperature control solution.

Protect Your Pillow

With the addition of the Core Pillow Cover you can extend the lifetime of your pillow. By adding an additional layer to your pillow this will reduce the direct wear and tear of your pillow and make laundry day a breeze.

A man smiling and laying on a Slumber Cloud Core Down Alternative Pillow
Zippered Enclosure
A couple pillow fighting with Slumber Cloud Core Down Alternative Pillow

Why It's Different

Most companies that claim to have cooling, sweat-wicking bedding only attempt to manage temperature once you've already become uncomfortable. Slumber Cloud is doing something different.

Slumber Cloud Bedding utilizes Outlast® technology for a proactive, not reactive, approach to temperature regulation. Outlast® technology regulates heat to stop moisture from developing in the first place, instead of attempting to wick away sweat that has already developed.

Not too hot…not too cool…just right.


Not to be confused with pillowcases, these pillow covers are traditionally used underneath your pillowcases to keep your head cool and extend the lifetime of your pillows.

Yes, we want your bed to look nice and match the rest of your linens so we made sure the technology inside our pillow covers will still work even when used with a pillowcase.

Slumber Cloud products are designed to help manage heat and humidity build up. It is not an air conditioner with a set temperature degree, but it will react to your temperature all night long to reduce heat build up and manage temperature swings.

The Single Pack option comes with one pillow cover. The Two Pack comes with two pillow covers. That means one for you and one to share with your partner (or not share, we don’t judge).