Regatta Great Outdoors Womens/Ladies Fleece Wellington Boot Socks Elastodiene, Polyamide, Cotton The Fleece Wellington Sock acts as a super warm cosy liner in the colder months. Keep them in your boots by the door for winter comfort walking the dog, doing the garden or muddy walks. 5% Elastodien, 15% Polyamide, 40% Cotton and 40% Polyester.