Premium Materials: Made with premium materials, so you can weat it comfortably all night long or if you need to catch some sleep on the go. FULLY ADJUSTABLE: Fits all head sizes with an adjustable, low velcro closure at the back that won’t catch your hair. PROVEN RESULTS: 81% of participants said they felt they got better sleep. On average, wearing the Restorative Sleep Mask resulted in 21 more minutes of quality sleep and a 6% increase in the time spent in REM sleep. LIGHTWEIGHT, MINIMALIST DESIGN: Crafted with a contoured shape around the eyes to reduce pressure, it’s lightweight with a minimalist design, making it comfortable even for side sleepers. EFFECTIVE LIGHT-BLOCKING: 100% of study participants said there was minimal to no light leak, which helps increase time asleep. The latest innovation from Whoop is here - introducing the Restorative Sleep Mask. Just like the name says, this sleep mask is designed to boost Restorative Sleep which is a combination of deep sleep (SWS) and REM sleep. Restorative sleep is key to waking up recovered, refreshed amd ready to perform your absolute best. Created to be more comfortable than ever, 100% of study participants said there was minimal to no light leak, which helps increase your time asleep. Wearing the Restorative Sleep Mask also resulted in better sleep quality, increased sleep performance, and reduced light sleep duration. If you're ready to sleep better and sleep longer, it's time to try the Whoop Restorative Sleep Mask.