Bridgedale provide a 3 year guarantee on any Bridgedale sock that contains Wool Fusion. Any season, anywhere, all year round, Bridgedale Comfort Summit Socks are the socks of choice for mountain & trail walking in cold conditions. Warmly insulated with full leg terry cushioning & double density underfoot padding that extends over the Achilles tendon area, Bridgedale’s Wool Fusion technology ensures high performance from the Merino Wool/ Coolmax yarn blend, that promotes warmth, softness & moisture wicking breathability. The socks also have a low-tension cuff for extra added comfort. (05/12)