Ouch Mystere Lace Mask Purple. Is your sex life exciting enough? Add this lace eye mask by Ouch! into the mix. Because the material only allows a small amount of light through, it reduces your vision, but heightens you other senses. Use this product on its own or combine it with the other Ouch! products. Material Silk. Dimensions package 4.76 inches by 0.79 inch by 7.09 inches. Weight package 1.27 ounces. Product dimensions 37.4 inches by 3.94 inches. Specifications Material Silk.