Defend against Old Man Winter's coldest attacks with these Mil-Tec Thinsulate Watch Caps. Warm acrylic knit construction locks in heat, while a soft polyester microfleece lining keeps things comfortable against your skin. Thinsulate insulation adds serious warmth without extra bulk, for reliable protection on the coldest days. Mil-Tec military-style design Olive Drab knit acrylic outer layer 40 gram Thinsulate insulation for warmth Polyester microfleece lining for comfort Stretch knit construction for a snug, comfortable fit One size fits most