Smartwool Run Cold Weather Mid Crew Socks In addition to being seriously comfortable, very durable, and designed so they won't slip inside your trainers, the Smartwool Run Cold Weather Mid Crew Socks (£20) will keep you your feet warm and dry even on the longest winter run. Image Source: smartwool.co.uk Smartwool Run Cold Weather Mid Crew Socks £20 from smartwool.co.uk Buy Now