Only the finest Merino Wool is used by Minus 33 to create a garment that is washable, dryable and oh-so soft and supple. The Minus33 Midweight Crew wicks moisture away from the skin approximately 30% faster than any synthetic garment, and will regulate your temperature even when wet. At work, exercising, skiing, climbing, or relaxing, The Minus 33 Midweight Crew is an extremely comfortable, high performance piece.