1. Comfortable, Breathable: The sleep mask is made of high-density slow-rebound memory foam which is softer than an ordinary one, and the outer material uses the yoga clothing fabric that is breathable.2. No light leakage: This eye mask is Uniquely designed of the nose area, and it can fit all types of noses, effectively blocking light from entering, bring you into a complete dark at any time and anywhere. has deeper space allows your eyes freely blinking.3. No Eye Pressure: 3D Sleep mask has deeper space, coverage and the edges fit the cheekbones. has deeper space so that it has no eye pressure, won't touch the eyelashes and you can blink as you want.4. Adjustable: adjustable buckle strap making our sleep mask one size fits all, which will not catch or break hair nor will it hurt your ears, suitable for any sleeping position and stay in the place.5. Note: hand wash with water below 40℃ /104℉, please wash the eye cover for sleeping and let it dry naturally before use.