lightweight low bulk stretch micro fl eece is ideal for layering. Specially engineered micro polyester and spandex yarns add warmth and insulation when you need it without causing overheating. 4-way stretch provides for complete freedom of movement. Anti-pill process ensures long lasting durability while the ec2 Qwik-dri process transports moisture to the outside surface where it quickly evaporates to keep you warm and comfortable in extreme cold temperatures. Antimicrobial process help eliminate odor causing bacteria.