Tek Gear&reg; Men's Thinsulate Cuffed Knit Beanie Hat, in Charcoal Grey (OSFM) Shell: 100% acrylic. Lining: 100% acrylic. Interlining: Knitted: 100% acrylic. Fleece: 100% polyester. Non-woven: 75% olefin, 25% polyester Hand Wash Tek Gear Men's Thinsulate Cuffed Knit Beanie Hat, in Charcoal Grey Warmth on those cold winter days Size: one size. Color: Gray. Beanie.