Sealskinz Unisex Waterproof Cold Weather Mid Length Sock, Black/Grey, LargeThe original, 100% waterproof, windproof & breathable mid length sock. The inner lining is crafted from fine Merino Wool to insulate and regulate temperature making this perfect for use in colder weather conditions.Features of Sealskinz Unisex Waterproof Cold Weather Mid Len..