BeautySpaceNK Slip Pure Silk Sleep Mask with Elastic Band Reduce Stretching Peony Includes: 1 x peony pure silk sleep mask (3.3 x 8.1 / 8.5cm x 20.5cm) The beauty secret of celebrity hairstylists dermatologists and beauty experts. What could be better than sleeping on a slipsilk pillowcase? Wearing a luxurious slipsilk sleep mask at the same time (so your beauty sleep isn t interrupted). THE SLIPSILK DIFFERENCE: Slip pure silk products are made using slipsilk developed and refined for over ten years to provide the ultimate combination of shine thickness softness and durability. In laboratory testing slipsilk pillowcases were shown to absorb significantly less face cream than cotton pillowcases.