Up to -30% Free Shipping & Extended Holiday Returns New

Performance Cotton Pillowcases

NASA Cooling Technology Cotton Hand Feel Breathable Fabric

Product Description

Complete your Performance Cotton Sheet Set with matching Pillowcases. Crafted from cotton for softness and durability, with temperature-regulating fibers for cool comfort.

Product Comparison

Features & Benefits

- Patented Outlast® fibers and premium cotton give the ideal balance of comfort and temperature-regulation

- Includes two pillowcases

- OEKO-TEX® STANDARD 100 Certified Technology. Certification Number: SH025 151577 TESTEX

Materials

- 300 thread count 30% Outlast® viscose / 70% cotton

Size Guide

Standard - 20” x 30”
King - 20” x 40”

Care Instructions

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

Pro Tip:
Wash this every 1-2 weeks. Do not iron, bleach or dry clean your sheets.

Free Shipping, Extended Holiday Returns, & Price Matches

Free Shipping: All U.S. orders are shipped right to your door, free of charge. Orders are typically shipped within 24 business hours.

Extended Holiday Risk Free Trial: Sleep on it, wash it, and really put it to the test until February 28th, 2026! If you don’t love your new bedding, just return it for a full refund. No questions asked!

Price Matches: Buy any Slumber Cloud item now. If it goes on a deeper sale within the next 60 days, just let us know and we'll refund the difference.

*Final Sale items and colors are not eligible for return, exchange, or the 60 Night Trial Period.

Performance Cotton Pillowcases

On Sale from $27.30

Why You'll Love It:

Pillowcases designed for maximum sleeping comfort.

Year Round Comfort

NASA-engineered tech and cotton fibers absorb excess heat when warm, release it when cool. Ideal for year-round comfort.

Singly-Ply Construction

The Performance Cotton Pillowcases have single-ply, long staple fibers for high-quality, breathable comfort while you sleep.

Softer With Each Wash

With each wash the cotton blend gets softer, like a cozy lived-in cotton t-shirt.

A better night’s sleep because of science.

It’s a fabric designed for NASA spacesuits up where temperatures change by 500 degrees. We think it can handle your bedroom.

How it works

The Only NASA Bedding

Our bedding utilizes Outlast®, the world’s only textile technology to have received the Certified Space Technology™ quality mark by the renowned Space Foundation.

Reduces Sweat By 50%

Our bedding provides proactive heat and moisture management, clinically proven to reduce night sweats by up to 50%.

Read the Outlast Humidity Sleep Study

Improves Deep Sleep By 20%

Our bedding adapts to the ideal temperature of both hot and cold sleepers, proven to decrease tossing & turning and increase sleep efficiency by 20%.

Read The Outlast Heat Sleep Study

"Didn't realize how much the sheets would make a difference in my quality of sleep. Definitely buying another set!"

- Becker

"The sheets are soft and cozy. They fit my bed perfectly. I love the additional strap on the 4 corners of the fitted sheet."

- Kylie S.

Compare Our Products

Find the perfect solution for your needs

Performance Cotton Pillowcases

Cotton

Cooling Cotton

Durable

Traditional Hand-Feel

Performance TENCEL™ Pillowcases

TENCEL™ lyocell

Dual Technologies

Moisture-Wicking

Silky Smooth

Performance Linen Blend Pillowcases

Linen + Viscose

Airy & Breathable

Textured

Softer Than Traditional Linen

	Performance Cotton Pillowcases	Performance TENCEL™ Pillowcases	Performance Linen Blend Pillowcases
Outlast® Technology	Yes	Yes	Yes
Moisture-Wicking	No	Yes	No
Hand-Feel	Lived-In Traditional Cotton	Silky Smooth	Soft + Textured

Our Products

Outlast® PCM Technology

Proactive temperature management

Balances fluctuations in temperature

Phase change Materials

Brands Like Buffy & Cozy Earth

Moisture-Wicking Fabrics

Reactive Cooling

Works after sweat is produced

Bamboo, Eucalyptus, & Lyocell

Brands Like Parachute & Boll & Branch

Traditional Fabrics

Traps Heat & Moisture

Can cause overheating

Variety of weaves & hand feel

	Us	Moisture-Wicking Fabrics	Traditional Fabrics
Prevents Sweat Build-Up	✓	—	—
Manages Hot & Cold Sleepers' Needs	✓	—	—
Cool To The Touch	Exceptional	Moderate	Poor

FAQs

What's the difference between the Performance Cotton Pillowcases, Performance TENCEL™ Pillowcases, and the Performance Linen Blend Pillowcases?

Although all options are designed to help you sleep cooler and more comfortable, it’s important to choose the version that best suits your sleeping needs. Below is a quick overview of each option to help you in this decision making:

The Performance Cotton Pillowcases:
The blend of cotton and Outlast® temperature-regulation viscose fibers offers a traditional super soft cotton feel. Ideal for those who prefer a more classic pillowcase but want temperature-regulation performance.

The Performance TENCEL™ Pillowcases:
The blend of premium TENCEL™ and Outlast® temperature-regulation viscose fibers offers a buttery, silky performance feel. Ideal for those who prefer silky smooth softness plus moisture-wicking.

The Performance Linen Blend Pillowcases:
A blend of Outlast® temperature-regulation technology, viscose, and FLAX™ Linen fibers offers an elevated textured look and ultra soft handfeel. Ideal for those who want temperature-regulation with the luxurious look of Linen.

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 is the hand-feel of the fabric?

The premium fabric has a super soft cotton hand-feel, with a slight cool touch.

How many pillowcases come in a set?

The Essential Pillowcase Set comes with two separate pillowcases in a set.

Over 30,000 happy sleepers have spoken

We've helped over 30,000 sleepers unlock their best rest yet. See why customers and the press are calling our products a dream come true. Read all reviews

★ ★ ★ ★ ★

These sheets and duvet cover are so comfy and cozy! They really do keep me cooler at nights too; which I've been fighting with my entire life - I'm an overheater! I already recommended them to my best friend.

— Kristi M.

★ ★ ★ ★ ★

Perfect for California Summer! I love the lightweight and how well it regulates heat, so that we are not hot nor cold. It is perfection. I was hesitant because of the cost but glad that I decided to purchase it

— Esther B.

★ ★ ★ ★ ★

I have bought countless pillows, new bed, different positions, tried couch, bought new couch. Got this ultra cool pillow, so soft, literally feels like sleeping on a nice cool cloud. Slept the full night, first full night in over a year.

— Sagar J.