The Satin-Lined Shower Cap is a unique product. The Inside is satin, which helps to protect your hair while you shower. This product is perfect for natural hair, also for all types of hair and heads. The Best thing about the cap is the resizable quality. So no matter your hairstyle, no matter your head shape, you have the shower cap fit to your head!100% Handmade100% Waterproof (on the outside)100% Charmeuse Satin (on the inside)Non-reversible