Bridgedale provide a 3 year guarantee on any bridgedale sock that contains woolfusionregthe word lsquoendurancersquo is connected with an activity it leaves no doubt that long haul resilience and toughness is required if you are intending to take on a real winter challenge the bridgedale endurance summit knee high sock should be your partner using their woolfusionreg technology bridgedale combines tough new wool with endurofil yarn to provide high performance insulation moisture w