Made from a new tech fiber of activated charcoal derived from coconut husks blended with spandex for stretch the Swix Tista 1/2 Zip Men's Mid Layer is an easy care, quick dry, layer that packs down small for fitting into your bag while providing terrific moisture management in an insulating layer for optimal thermoregulation. Flat lock seaming for a chafe-free experience and raglan seaming for unrestricted shoulder movement this won’t pull as you plant those poles. A turtleneck zip neckline with a long length zipper for extra venting when necessary this is an easy care, wash and wear, layer for enhanced moisture movement and comfortable thermoregulation across a variety of winter sports.