Pyjamamania Mens Merino Wool Blend Thermal Underwear 2pc Set Beige Sizes S-XXL 60% Wool/ 40% Polycotton Blend Machine Washable Material: 60% Wool/ 40% Polycotton Blend 2 Piece - Top + Bottom Lightweight and super soft warm thermal knit fabric Crew neck (Round Neck). Perfect for underneath any clothing