The Millet Kamet Grid Hooded Jacket is built from Polartec(R) Power Grid fabric, whose grid structure wicks moisture during a hard push and holds warmth the moment we stop moving. The fabric is 94% recycled polyester, so the fleece keeps its stretch and recovery without relying on virgin material. Raglan sleeves and seamless underarm panels free up our reach and cut chafing under a pack or harness through a long day in the mountains. What Our Gearhead(R) Experts Are Saying:"I've climbed hard enough to work up a sweat, then stood at a belay in the wind, and this fleece adjusted with me both times without ever feeling clammy or cold. That grid structure earns its keep the moment the pace changes."