This fully lined beanie keeps the chill at bay and coordinates with our Striped Arm Socks (STA03) sold separately.| 100% acrylic 89/9/2 acrylic/poly/metallic (Sport Blue/Silver, Team Navy/Silver) 100% polyester fleece lining All colors have black fleece lining except True Royal, Maroon, Purple, Deep Orange and Sport Blue which have grey fleece lining