The knee socks are worn under the knee pads & are made with Coolmax®, a material that absorbs moisture & transports it to the outside so that it evaporates quickly & keeps you cool & dry. To prevent the socks from slipping, they have a non-slip silicone strip at the top. They have flatlock seams for added comfort & reinforced ankle, heel & instep areas. Features Full length knee brace sock with reinforced ankle, heel & instep areas Coolmax yarn upper & X-Flow mesh back Non-slip cuffs printed with silicone Flatlock seams for added comfort