Whether you're skiing biking running or bagging peaks the XTC Midweight Crew for Men will become a key part of your layering system. The soft thermally efficient and high-performance design was developed for multisport athletes who spend a lot of time in their base layers either on day trips or weekend adventures when fast and light packing is paramount. The natural odor absorbent bamboo charcoal fibers will keep you from scaring away your friends- even after a long ski tour or backpacking trip. Underarm gussets allow for a full range of motion and comfort. The XTC midweight utilizes innovative Bamboo Charcoal technology a process by which the bamboo plant is carbonized at very high temperatures and infused into yarns to enhance performance qualities. The end result of this process is an incredible layer that wicks moisture rapidly inhibits odors and delivers a UPF 50+ rating- all in a highly compressible comfortable base layer.