FIIL Sleep Mask for Sleeping, 3D Contoured, 99.99% Light Blocking, Comfortable, Lightweight, Breathable, Eye Cover, Washable, Adjustable, Perfect for Travel/Business Trip/Napping, Unisex (Black) 3D Contoured Design: This sleep mask adopts an advanced 3D contoured design with a unique eye cavity structure that securely protects eye makeup. It prevents mascara and eyeliner from smudging, ensuring comfort even during extended use. The sophisticated support structure provides pressure-free comfort for the eyes. 99.99% Light Blocking: This sleep mask features an innovative 3D nose bridge synchronization design that closely conforms to the eyes and nose, effectively blocking light from all directions. By completely blocking out disruptive light, it creates an optimal sleep environment day or night, promoting the secretion of melatonin necessary for sleep, alleviating insomnia, and effectively improving sleep quality. High-Quality Materials: This sleep mask for sleeping uses multiple layers of high-quality materials, including a moisture-wicking fiber layer, high-rebound sponge, and skin-friendly fiber layer. It is breathable and absorbs sweat, keeping you comfortable and dry even in the hot summer. The high-rebound sponge makes the eye mask soft and fitting, without putting pressure on the skin, providing an unparalleled wearing experience. Relax Anytime: A convenient storage bag is included so you can easily relax anywhere. Whether in the office, on a business trip, commuting, or camping, this summer sleep item provides a cool and comfortable sleep environment whenever you want to take a short nap. Adjustable Size: This 3D contoured sleep mask is designed to meet the needs of various users. The adjustable Velcro allows for easy adjustment of the head size, fitting both children and adults, regardless of gender. It's an ideal gift for light-sensitive family and friends who have trouble sleeping. Enjoy a comfortable sleep. Ultra-Lightweight & Washable: The ultra-lightweight design puts no pressure on the head, feeling so light you'll forget you're wearing it. It's machine washable when dirty. Washing in a laundry net allows for quick drying, keeping it clean at all times.