Ergonomic contours increase blackout performance by 99% for total darkness, perfectly matching any nose height. Stress-free for your eyes, allowing you to blink freely and stay clear of eye makeup for increased REM sleep. Gentle, painless, easy-to-adjust headband won’t tangle hair or hook pillows. The straps are fully adjustable. Whether you sleep on your back, side or stomach. Tilts super snugly to the side to avoid movement and no pressure on temples. Great for eliminating fatigue, improving sleep quality and giving you more energy to work and study. Ideal for traveling, shift work, meditation, yoga and more. 1 location includes the shipping cost to US. Orders of 3, 000 pieces or greater are eligible for sea shipping. 100% guarantee for quality. Rush Service.