The NIDRA DEEP REST SLEEP MASK. HASSLE-FREE MONEY BACK GUARANTEE This is the best sleep mask on the market and will leave you more rested than ever before. We guarantee it or your money back! If for any reason you're not satisfied, within 30 days, please return your mask for a no-questions asked, full refund. Our Money-Back Guarantee Sleep Mask is specially designed with deeply molded cups that curve away from eyes and eyelashes for rub-free comfort. This mask blocks out light and visual stimuli, while contouring to your face and eyelids for restful and uninterrupted sleep! Enjoy a night of deep, luxurious sleep. Sweet dreams! 9 Reasons Why Sleep is So Important - Keeps your heart healthy - Reduces stress - Can help you lose weight - Boosts memory - Makes you more active - Reduces your risk of depression - Reduces chronic inflammation - Helps your body replenish - Makes you smarter.