Acrylic knit for a super cosy sock that conforms to the shape of your foot whilst providing ultra warmth. These socks have a Sherpa Fleece Lining with a 100% Acrylic Outer Layer. Benefit from the combination of these materials as they offer qualities such as being ultra warm, anti shrink proof, eco-friendly, lightweight and moisture wicking. Features cross weaved pattern , anti slip grippers on the bottom and a ultra-soft and warm furry lining.