It's 100% Polyester. It's Stylish, but It's Basic and Comfortable. It will help you to have a stylish look with a small detail. The hat is quite remarkable thanks to its form and style. ;D iameter of the product: 57 cm;Sample Size: S/36/1; Model Measurements: Height: 170, Bust: 80, Waist: 58, Hips: 89, Size: S/36/1;; Colors and lights differ in studio shots. It May Change.