Harkila Expedition Long Sock are specifically designed for those extremely cold days to keep your feet warm and dry. Made from a 82% wool mix with shock absorbing sole and reinforcement at the heel and toe make these socks highly durable and comfortable. They are suitable for wearing with wellington boots with being under knee length. Ideal to prevent cold feet from ruining your day out. Harkila Expedition Long Sock is designed to keep your feet warm and comfortable on extremely cold days Available in Grey/Green in sizes S-XL Made from 100% Natural tech fibre for a warm durable soft sock Merino Wool for a durable Reinforcement on heel and toe areas to maximise durability Shock absorbing sole for excellent comfort during long days Under knee length Size: S - UK2-4 (EU35-38), M - UK5-8 (EU39-42), L - UK9-11 (EU43-45), XL - UK12-16 (EU46-50)