Inner Lining is 100% Polyester satin lining, with an inner trim band for extra comfort. Outer jacket (shell) is made from 60% wool, 25% polyester, 11% acrylic and 4% composed of other fibers, making this hat of top quality fabric. Other features include cotton moleskin shoulder, 2 front bellow pockets with moleskin trim, button up front and inner zip pocket. Produced to the highest standards by a manufacturer of top quality English countrywear and derby clothing. The tweed has been treated with Teflon, which acts as a fabric protector, making this product long lasting-lasting protection against oil- and water-based stains, dust and dry soil. Please check our size guide against your hat you wish to purchase.