For Dreamlight blackout eye mask 2S,Deep sleep starts with a 4-layer shading structure,99.9% Super shading/ Face data shaping /Comfortable pressure partitioning Extreme shading requires 4 layers After two years of repeated testing, in order to achieve ideal shading, the eye mask needs to be fused with four layers of sponge with different structures. The typical "3D"eye mask requires only 180 seconds for forming hot pressing, while the Dream light eye mask takes 720 seconds 3D concave design Do not press the eye, care for eye makeup In order to have a more comfortable wearing experience, Dream light subverts thecraft of making eye sockets, and the spacious 3D space of eyes does not compress your eyes and eyelashes, so as to protect your makeup. Colour:Black Material:Modal Package Contents: 1 x Eye Mask Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.