?Why choose Aosun?: Aosun is committed to improving everyone's sleep problems and never stops innovating. We are open to suggestions, if you have any questions about our blackout eye mask, please feel free to contact us and we will give you a satisfactory answer. ?Sturdy stitching technology?: The eye masks for sleeping uses the latest stitching technology instead of ordinary gluing technology, which has been tested and will not break down after many washes, making it more sturdy and durable. ?Adjustable elastic band?: The sleep masks has an adjustable elastic band, it won't move or come off while sleeping, it also fits all head circumference sizes. Creates the most comfortable sleeping position without tangling your hair. ?Effective sleep aid?: The eyemask is filled with high resilience memory foam, which is softer and more skin-friendly, while the memory foam eye masks stimulates the pineal gland to release melatonin, an important facilitator of deep sleep. ?Perfect for blocking light?: The sleeping mask is designed with an extremely soft sponge at the nose bridge, effectively blocking light from the nose area to ensure you can get a good night's sleep anywhere, at any time. ?Excellent 3D contouring?: This eye mask for sleeping has an ergonomic 3D contoured design in the eye socket area, allowing your eyes to blink freely without rubbing against your eyeballs or eyelashes.