**Manta Sleep Mask — The world's comfiest 100% blackout sleep mask. Guaranteed.<br><br>Sleep is too important to leave to chance. So don't.<br><br>Meet the sleep mask that single-handedly made all other masks obsolete.<br><br>The only mask designed, constructed and optimized for deepest-possible sleep in any environment.<br><br>Because better sleep means better everything.<br><br>*100% Blackout for Deeper Sleep — Just a pinprick of light can disrupt REM and deep sleep, leading to post-sleep tiredness. That's why Manta perfectly covers and conforms to your eyes to block 100% of light, even in broad daylight — so you always get deep, uninterrupted sleep.<br><br>*Infinitely Adjustable for Personalized Fit — Manta is made to fit your unique face. Your eye covers' position, angle and strap tightness are infinitely adjustable for a fit so seamless, you barely feel your mask on your face. It's like it was custom made for you. (Because it basically was.)<br><br>*Soft, Breathable, Durable Materials — Manta is designed for no-compromises comfort and constructed with super soft, breathable, durable materials that gently conform to your face without putting any pressure on your eyes. So you snooze soundly whether you're on your back, side or stomach.<br><br>*Zero Pressure on Eyelids or Lashes — Deeply molded eye covers for complete comfort in every position.