Shamrock Madhatter hat. The green and white stripes and the green shamrocks cover the 9" tall crown. Approx. 8 5/8" Crown 2" Brim Made of: 100% Polyester - Velvet Finish Fabric Lining Hook and Loop Adjustable Sizer - Adjusts to Fit Size(s): One Size Fits Most - Fits sizes 7 (M) - 7 3/8 (L). Adjust size using inner hook and loop adjustable sizer.