Carhartt's bomber cap in made of 100% nylon with a Teflon® water-resistant finish to help keep you dry. For warmth, it's lined in 100% quilted polyester fleece and features flip-down/fold-over ear flaps with a chin-strap and hook-and-loop closure. *100% nylon *100% polyester quilted-fleece lining *Teflon® water-resistant finish