Thermerino Long Sleeve Thermal Top200gsm, 100% Super Fine Merino Wool The ultimate in thermal insulation Machine washable and highly durableThere is no subsitute for 100% Merino WoolThe outstanding thermal properties of the 100% Merino wool place it in a class of its own if this garment gets damp, you won't get cold.This fabric is highly breathable and wicks moisture rapidly away from the body.This garment is machine washableMerino does not trap odour like synthetics