Blackcell 2-pack Double Layers Elastic Reusable Waterproof Bath Cap Shower Cap Inner material:superfine fiber,Outer material:EVC film; Stretched diameter:36cm/14.2inches Inner layer of water absorption,outer layer of waterproof With elastic design, one piece fit fits most of people Perfect bathroom accessory for any woman with any length of hair,especially for long hair 2-pack color:blue pink