The Heat Holders Sloane Feather Knit Roll Up Hat for Ladies is made of high-performance thermal yarn and a luxurious fur-like HeatWeaver insulation lining. This women's winter hat from Heat Holders is designed to maximize the amount of warm air held close to your body. Enjoy the knitted pom-pom! The shell of this women's beanie is made of 71% polyester/29% nylon. The lining is 100% polyester, and the pom-pom is 100% acrylic. Machine wash. Imported. Shell: 71% polyester/29% nylon Lining: 100% polyester Pom-pom: 100% acrylic Fur-like HeatWeaver insulation lining Maximizes warm air held Knitted pom-pom