The combination of silk, merino and cotton makes the Silkbody men's Legliners the most comfortable pair of long johns around. This silk long underwear is durable enough to be worn running, to the gym, or out tramping. They add amazing base-layer extra warmth to ski and snow gear, and the gusset allows for a full range of movement. Also supremely comfortable when worn as pyjama's. The smooth fabric means they won't stick to outer layers. Fly front. (Also available for Women)