REST Evercool+ Cooling Pillowcases Review: The Cold Side of the Pillow, All Night

If you are a hot sleeper, you know the struggle of flipping your pillow to find the cold side. The REST Evercool+ Cooling Pillowcases promise to make every side the cool side, with a Qmax cooling value of 0.36 that leaves cotton (0.11) and silk (0.19) far behind.

The REST Evercool+ is a set of two cooling pillowcases made from a nylon and spandex blend infused with IONIC+ antimicrobial silver yarn. REST markets these as a performance fabric upgrade for hot sleepers dealing with night sweats, hot flashes, and overheating.

I have been sleeping on these cooling pillowcases for several weeks, testing them through warm nights and comparing them against silk and bamboo alternatives. The cool-to-the-touch fabric and silver-infused antimicrobial properties set them apart from standard pillowcases on paper.

Here is my take: the REST Evercool pillowcases deliver on their core cooling promise, but the unusual fabric feel and premium price mean they are not for everyone. Let me break down what I found.

What I Liked

The REST Evercool+ pillowcases impressed me in several areas during my testing period. Here is what stood out.

Instant Cool-to-Touch Technology

The cooling effect is immediate and noticeable. The moment you lay your face on the pillowcase, the nylon-spandex blend pulls heat away from your skin. REST claims a Qmax value of 0.36, which measures the rate of heat transfer on contact. For comparison, cotton scores 0.11 and silk scores 0.19.

In practice, this means you get that “cold side of the pillow” sensation without flipping. I noticed the cooling effect throughout the night, not just when I first laid down. For hot sleepers who wake up with a sweaty face, this is a meaningful improvement over traditional pillowcase materials.

Silver-Infused Antimicrobial Fabric

The IONIC+ antimicrobial technology uses silver yarn woven directly into the fabric. Silver ions inhibit the growth of odor-causing bacteria on the pillowcase surface, keeping it fresher between washes.

After several weeks of use, the pillowcases showed no signs of developing that stale smell that standard pillowcases can get between laundry days. The OEKO-TEX Standard 100 certification confirms the fabric is free from harmful substances, which matters for something pressed against your face every night.

Silk-Like Smoothness for Hair and Skin

The fabric glides against skin with minimal friction, similar to how a silk pillowcase performs. For anyone with curly hair, this reduced friction helps prevent frizz, tangles, and breakage overnight. Users with sensitive skin also benefit from the smooth texture that does not tug or irritate.

Unlike silk, these pillowcases add active cooling to the smoothness. That combination of cool temperature and low friction is something silk alone cannot match.

Elastic Snug Fit on Any Pillow

The stretchy spandex blend creates a snug, elastic fit that wraps around pillows without bunching or slipping. I tested these on both a standard down pillow and a thicker memory foam pillow. The reversible design means both sides deliver the same cooling effect, so there is no wrong way to put them on.

The high-stretch fabric accommodates different pillow thicknesses and shapes. The envelope-style closure keeps everything secure through the night.

Easy Machine Washable Care

Unlike silk pillowcases that often require delicate hand washing, the REST Evercool pillowcases are fully machine washable. Toss them in on a gentle cycle with pH-neutral detergent and tumble dry on low. The hypoallergenic fabric maintains its cooling properties and smooth texture through repeated washes without pilling or degradation in my experience.

What Needs Improvement

No product is perfect, and the REST Evercool pillowcases have a few areas worth noting before you buy.

Slippery Fabric Takes Getting Used To

The smooth nylon-spandex fabric is noticeably slippery. During the first week, my pillow slid around on the bed more than usual. Some Reddit users describe the Evercool fabric as feeling like “workout gear or performance clothing” rather than traditional bedding. If you are used to the grip of cotton or linen, the transition takes adjustment.

This is the most common complaint I found across reviews. A non-slip pillow pad or textured pillowcase underneath can help, but it adds extra steps to your setup.

Higher Price Than Alternatives

At $79 for a set of two king-size pillowcases, the REST Evercool sits at the premium end of the cooling pillowcase market. Bamboo cooling pillowcases can be found for $20-40, and even silk pillowcases hover around $40-60 for a set. The Evercool technology does deliver measurable cooling that those alternatives lack, but the price difference is significant.

REST occasionally runs sales that bring the price to around $71, and the pillowcases are HSA/FSA eligible through Truemed for those with qualifying conditions.

Customer Service Concerns

Multiple Reddit users report difficulties with REST’s return process. The company requires original packaging for returns and has drawn criticism for slow refund processing. While my experience ordering was smooth, the pattern of complaints about customer service is worth mentioning. REST offers a 30-day return window and one-year warranty, but executing on those policies appears inconsistent based on user feedback.

How It Compares

The cooling pillowcase market has grown significantly. Here is how the REST Evercool stacks up against popular alternatives.

vs Coop Home Goods Cool Side Pillowcase

The Coop Home Goods Cool Side is a strong competitor with a dual-sided jacquard design. One side is cool bamboo-based rayon and the other is cozy polyester. Coop offers a generous 100-night trial period compared to REST’s 30-day window.

The REST Evercool delivers stronger instant cooling thanks to its higher Qmax rating and full-surface nylon-spandex construction. The Coop Cool Side feels more like traditional bedding, which some sleepers prefer. Choose the Coop if you want a more conventional fabric feel and a longer trial period. Choose the REST if maximum cooling is your top priority.

vs Purple SoftStretch Pillowcase

The Purple SoftStretch uses a stretchy bamboo blend that is breathable and elastic. It comes in at a lower price point, making it a budget-friendly cooling option. The fabric is not as cozy as silk or bamboo but provides decent airflow.

The REST Evercool outperforms it in raw cooling ability. The Purple SoftStretch is better for those who want mild temperature regulation without the athletic-fabric feel. If you need noticeable cooling, the REST is the stronger choice. If you want something gentler and more affordable, Purple delivers adequate breathability.

vs Silk Pillowcases

Traditional silk pillowcases have a Qmax of 0.19 compared to the REST Evercool’s 0.36. That means the REST fabric transfers heat away from your skin nearly twice as fast as silk. Silk does offer a more luxurious feel and well-established hair benefits.

The REST Evercool matches silk’s smoothness for hair care and adds moisture-wicking cooling that silk cannot provide. Silk requires delicate hand washing while the REST is machine washable. For hot sleepers, the REST is the clear winner. For those prioritizing a luxury feel over maximum cooling, silk still has its appeal.

Final Verdict

The REST Evercool+ Cooling Pillowcases deliver on their primary promise: measurable, noticeable cooling that outperforms cotton, bamboo, and silk alternatives. The combination of a high Qmax rating, silver-infused antimicrobial properties, and machine-washable convenience makes these a strong option for hot sleepers.

I am giving the REST Evercool+ Cooling Pillowcases a 4.2 out of 5.

The slippery fabric feel, premium price point, and mixed reports about customer service keep the score from going higher. These are trade-offs that come with choosing performance cooling fabric over traditional materials. For the right buyer, the cooling benefit far outweighs these drawbacks.

Bottom line: If you struggle with overheating at night and want the coolest pillowcase on the market, the REST Evercool+ is worth the investment. The cooling is measurable, the fabric protects hair and skin, and it survives the washing machine. Just know the fabric feels different from anything you have slept on before.