Superior Heat Insulation: Three times warmer than cotton, two times warmer than wool Amazing Anti-Static Technology: "Through friction, produces Negative Electric ions" Excellent Permeability: Whisks away sweat and moisture to keep you dry and comfortable Soft texture and great design, you can enjoy sweet and healthy life. Interior Material: Teviron 100% Exterior Material: Acrylic 65%; Nylon 30%; Wool & Polyurethane 5% Color: Off-White; Unisex