Women's Sawtooth Hybrid JacketLayering Position Insulated Outerwear Features True to size: Purchase your normal size to wear over or under other layers Exclusive 37. 5 Active Particle Technology Exhausts moisture and maintains core body temperature Traps odors (human signature) and releases them when laundered 20. 5 micron Merino wool Identical to Men's Sawtooth Hybrid Jacket but simply cut for a woman 95% Merino 5% Spandex 300gsm mid weight interlock Merino fabric Body mapped