The sealskinz thick mid length sock not only are they waterproof windproof and breathable they offer great comfort for all outdoor activities from hiking fishing a day of golf or even walking the dog wet feet will be the last of your worries with unique seamless close fitting three layer technology that reduces fiction between foot and shoe providing in built blister reduction designed with comfort in mind the sealskinz have an elasticated instep and achilles for added support and padded merino