Men's Long Johns 70% Wool , 30% Silk 619Long Johns made of a precious, natural, luxurious intimate blend of Merino extra fine wool and top quality pure silk flat knit fabric,enhancing the sheen and softness of the garment for a result that is cozy, pleasant on the skin, particularly warm because it retains body heat, granting thermal insulation and favouring natural perspiration, This classic men's Long Johns,ideal for delicate and sensitive skins to enjoy a warm and comfortable winter in