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Performance Pillowcase - Single

Revamp your bedding with the Performance Pillowcase that perfectly complements your Performance Sheet Set. This pillowcase is engineered with two temperature-regulating technologies that work together to create a highly efficient fabric. Proactive Outlast® viscose fibers and moisture-wicking TENCEL™ lyocell ensure optimal performance, providing you with unparalleled comfort and an excellent night's rest. Get ready to experience the ultimate in performance bedding with this pillowcase.



Size View Size Guide
Standard 20” x 26” Standard 21” x 29”
King 20” x 36” King 21” x 37”

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High performance with a silky-luxurious feel. The Performance Pillowcase not only delivers a cooler, deeper sleep, but gets softer with every wash. Say goodnight to scratchy sheets and sweaty nights with the Performance Pillowcase.

Slumber Cloud Icon Sets SizeIncludes two pillowcases in a set

Slumber Cloud Icon Thread Count300 thread count - 40% NASA-engineered Outlast® viscose/ 60% TENCEL™ lyocell fibers deliver a ultra soft, silky feel with higher temperature-regulating performance

Slumber Cloud Icon Oeko-TexOeko-Tex Standard 100 Certified Technology

A messy bed with Slumber Cloud Performance Pillowcases in white and light blue

Why we're different.

Outlast® technology is a unique material capable of maintaining and regulating your temperature. As your skin temperature increases, the technology absorbs heat, then releases it when your skin temperature drops, so you sleep “just right.”

Infographic image of how Outlast Technologies temperature regulation works. Creating a comfort zone to help prevent you from being too hot or too cold.

More than thread count, NASA-engineered Outlast® fibers adapt to fluctuations in your temperature for an innovative approach to maximum sleeping comfort. TENCEL™ fibers offer a silky smooth feel and moisture wicking properties for the most comfortable night's sleep.

A detailed view of the materials on the Slumber Cloud Performance Pillowcase - Single

Outlast® materials improve comfort for: Anyone looking for a more comfortable night’s sleep - they’ll sleep cooler and more comfortably. Sleepers who struggle with hot flashes and night sweats - proactive temperature regulation means they’ll sleep cooler and drier and wake up feeling refreshed. Thermally incompatible couples - individuals can sleep at their own ideal temperature.

Two women smiling drinking coffee and wrapped in a Slumber Cloud Plush Throw and clutching a pillow with the Performance Pillowcase - Single

We pass on everything we learn to our customers. From sleep studies to new technologies, we want to help you make informed decisions about your sleep.

Click to learn more about our studies: Heat Sleep Study Humidity Sleep Study

A woman lying in bed and clutching a Slumber Cloud UltraCool Pillow with the Performance Pillowcase - Single

The thoughtfulness is in the details.

It doesn’t stop at thread count. It’s the little things, the thoughtful details, that make our products the best available.

Single-Ply Construction

Single-ply construction means you can rest easy knowing you are sleeping on the highest quality fibers

Tencel® Blend

Tencel® blend gets softer with each wash

Easy to Care For

Just throw it in your home washing machine

Most frequently asked questions.

I sleep hot, my partner sleeps cold. Is this going to work for us?

Definitely! When you sleep hot but your partner sleeps cold we refer to this as being “thermally incompatible”. Our bedding is designed to automatically adjust to each sleeper’s ideal sleep temperature. With the unique ability to react to each sleeper's temperature independently, our bedding ensures that both you and your partner will sleep comfortably all night long.

How does the technology in the bedding work?

Outlast® technology is made of a unique material that can absorb, store and release excess heat. As an individual’s skin temperature increases, the technology will absorb that excess heat to help reduce overheating. The material will store the excess heat until the skin temperature begins to drop. When this occurs, the stored heat is released back to the individual to prevent chill. By managing the build-up of heat and moisture under the covers, Outlast® technology helps keep you at a comfortable temperature so you sleep “just right.”

How many degrees cooler will this keep me?

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.

What's the difference between Slumber Cloud bedding and other "cooling" bedding I might have tried?

Slumber Cloud takes a proactive approach to temperature control by absorbing and storing excess heat when temperatures are too warm and releasing heat when temperatures are too cold. This approach is different than most other "cooling" bedding technologies/products on the market that are moisture-wicking (ex. Bamboo & Eucalyptus). Moisture-wicking is a reactive approach because it doesn't start to cool you down until you build up sweat and moisture and then wicks it off of you. Our products are designed to prevent you from ever getting to the point of sweating and building up moisture.

Does this come with one or two pillowcases?

The Performance Pillowcase - Single comes with one pillowcase.

Is this machine washable?

Yes! Just like traditional bedding, Slumber Cloud products are designed to be washed and dried in your home washer and dryer. Please carefully follow the care instructions on the tag of your products.

Can I use an iron on my bedding?

The technology in our bedding is sensitive to high heats - instead of ironing we recommend using a wrinkle release spray such as Iron In a Bottle for that crisp and finished look.

How do I sanitize my bedding?

Although we recommend against using high heat when washing your bedding there are products that can help with sanitizing your bedding. Here are a few of our favorites: Dropps & Tide

How should I remove stains?

Please refrain from using harsh chemicals such as bleach and oxiclean on your bedding. Instead opt for more natural alternatives such as a small amount of dish soap, a warm water & vinegar solution, or specialty formulated laundry detergent such as Dropps

How do I wash my Performance Pillowcase - Single?

To wash your Performance Pillowcase, please follow the washing instructions on the tag. If you have cut your tags after purchase, then it is recommended to wash with Slumber Cloud Free & Clear Laundry Detergent or a mild detergent in cold water on a delicate spin cycle. When it’s time to dry your Performance Pillowcase, please dry it on low heat or air dry. Do not iron your Performance Pillowcase. To reduce wrinkling, take your Performance Pillowcase out of the dryer and immediately place them on your bed or use a wrinkle release spray such as Iron In a Bottle for that crisp and finished look.

Does Free Shipping Apply To International Orders?

Free shipping is only valid for US and Armed Forces delivery addresses. However, we do offer discounted shipping rates to Canada addresses.

Do you ship internationally?

Currently, we only ship internationally to Canada. At the time of purchase we include the cost of shipping, taxes, and duties for Canadian shipments. No additional fees will incur at delivery, but if they do please contact our customer service team at to take care of the issue. For all other countries, if you find a forwarder or have a friend or family member here in the states, we would be more than happy to work with you to get it there.

Can I still return an item even if it's been washed?

We accept returns in any condition within 60 days of purchase! We want you to absolutely love your new bedding, so if you wash an item, try it out, and decide it's just not for you, we can definitely still initiate a return. Please note we do our very best to donate all returns to local charities instead of a landfill. We appreciate your help in this process by washing any used items before returning them to us.

Are shipping fees covered for returns?

All shipping fees for domestic returns are completely free! When you initiate a return through our returns platform, you will receive a prepaid shipping label to get the item back to us. If you live outside the US and are looking to initiate a return, please check out the return policy in the International FAQs.

How do I initiate a return?

If you're looking to initiate a return, just head over to our returns page! Please note that we are not able to process returns for items listed as Final Sale or past the 60 day return period.

What is your return policy?

Bedding: All bedding products, excluding “Final Sale” items, come with a 60-Day Satisfaction Guarantee. Sleep on it, wash it, and really test it out - If you are not fully satisfied with your new bedding you can return the item(s) within 60 days of your purchase date, no questions asked. A refund will be issued, within 7 business days of receiving the returned product.

Final Sale: Final Sale are not eligible for return, exchange, or the 60 night trial period.

Apparel & Home: Items in new and unopened condition are eligible for a return or exchange within 60 days of purchase. In the event of a return or exchange, our team will inspect the item and if determined it is new, a refund or exchange will be issued within 7 business days of receipt. If the item is in used condition, missing tags, or has been removed from the packaging, the return or exchange will be voided and the product donated to a local charity.

Are your products covered by a warranty?

Yes! All of our products are covered not only by the 60 night trial period but also a 180 day warranty which covers manufacturers defects (i.e. stitching, sizing). Please note in addition to damage caused by disregard of care instructions, temperature performance is not considered a manufacturers defect or covered by the product warranty.

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Free Shipping & Returns

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

Try it For 60 Nights

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

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