Hee Grand 100% Pure Silk Filled Eye Mask Sleeping Mask Eyeshade (WatermelonRed)
The material of the both sides are 100 % silk.The color of the reverse side is black , for the dark color is more conducive to enhance the shading effect.There is a  interlayer of cotton between the two layers of silk, Conducive to the softness and comfort, but also help enhance the shading effect.