Our 3D eye shades have large eye cavities, we use 3D tech to tune sizes, ensuring your comfort. We use precision CNC lathes for smooth edges and firm joints. Soft material, lightweight & comfortable sleep mask for giving rest to your body while giving freedom to your eyes. Elastic headband with comfortable stretch without making you feel the tightness. Please hand wash, gently rub with cool water. Then let it naturally dry. Avoid wring dry, do not use the microwave oven or dryer to speed up the process of drying, as the high temperature will make the sleep mask deform and shorten the service life.