Singlet Top Cotton on the skin and Wool on the outside 338Crew neckline Singlet made of a precious and natural classic combination of pure Egyptian Mak Cotton on the skin and the finest Merino wool on the outside for undergarments that are at the same time warm, comfortable and very soft, Featuring no side seams construction, this classic men's tank top offers a comfort fit, ideal for delicate and sensitive skins to enjoy even the colder seasons, Underwear Material: 56% Wool , 40% Cotton , 4% Nylon recycled