Slip Beauty Sleep To Go Black Travel Set - Removable Cover, Whether you're on a long haul flight or treating yourself to some much needed beauty sleep on the go - this luxurious travel pillow, slipsilk travel pillowcase and matching slipsilk sleep mask set will have you dreaming in no time. The beauty secret of celebrity hairstylists, dermatologists and beauty experts. 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. ANTI AGING: We spend a third of our lives in bed.