Endura thermolite ii socks 2 packenduras thermolite ii socks are made of thermolite for extra warm thermal insulation on cold winter rides this extra insulating layer is a real treat for your feet letting you ride for longer and in greater comfort featuresmaterial 81 polyester 12 elastane 7 nylonextra warm thermolite insulationstretch arch supportlong cuff for extra warmthanatomically engineered for cyclingtwin packtechnologiesthermolite ideal for cold weather cycling thermolit