A double layer of high insulation materials ensures that fourth elements Hotfoot socks provide maximum thermal protection for the feet ? one of the first parts of the body to feel the cold during a dive. High density fleece combined with water resistant outer fabric creates a comfortable, dry and warm microclimate for the feet. Designed to fit the feet, these socks will stay on when taking off your drysuit, unlike some other drysuit socks. Featuring fourth element unique thermocline fabric made using ECONYL (R) recycled nylon, these socks are not only excllent thermal protection, but they are also part of the companys commitment to building a more sustainable product and company.