From website: The comfy, cozy, curl saver. What it is: A ribbed beanie that forms perfectly to your head and style, with a satin-lined inside to keep your hair at its best Why it's special: A low profile beanie for multi-season use Ultra-soft acrylic outside will keep you warm without overheating Charmeuse Satin-Lining help reduce friction, leaving your hair frizz-free, hydrated, and healthy A relaxed formfitting style that won't slip or fall Adjustable drawstrings allow you to tighten to your liking Good to know: 100% Acrylic, works for all hairstyles. machine wash & hang to dry