The BASIC 2 layer garment has been engineered to trap air between the layers of fabric to provide a natural warmth shield to keep you warm and comfortable. The inside and outer layers are constructed with a blend of 60% Combed Ring Spun Cotton and 40% Polyester for comfort and durability. The BASIC has been designed for wear in cold to very cold weather with low to medium activity. The BASIC - delivers comfort and warmth in all cold weather environments - whether at home, on the job or enjoying the outdoors.