Heat Holder Women's Sloane Feather Knit Roll Up Beanie - Created with high performance thermal yarn and luxurious fur-like HeatWeaver insulation lining to maximize the amount of warm air held close to your body. Outer: 71% acrylic / 29% Nylon Lining: 100% Polyester Pom-pom: 100% Acrylic Advanced insulating yarn Style: HHW07341