"This striped heather grey beanie is made of a incredibly soft, durable and long-lasting bamboo cotton. It's a slouchy fit. A large is a good average adult size. Fabric is pre shrunk. If unsure of size feel free to message me. Unstretched measurement of each hat around head. For example I have a 21\" head, I wear a large and its a comfy fit. XS: 17\" - Toddler Small: 18\" - Child Medium: 19\" - Adult Large: 21\" - Large Adult XL: 23\" - XL Adult XXL: 25\" - XXL Adult"