Features By encapsulating its fleecy yarns between layers of fabric, Polartec® Power Air™ fleece warms more efficiently with less weight Because the fleece is encapsulated, Power Air sheds up to 5x less microfiber into the environment than other premium mid-layer fabrics Jacket stretches 4 ways, breathes, wicks away moisture and dries quickly Cut for easy layering and easy moving, with spandex binding at the cuffs and hem Zippered hand and chest pockets keep essentials secure Seam-free shoulders reduce chafing under pack straps Thumbhole cuffs add ease to layering Made with 92% recycled polyester Made to reflect our love for people and the planet through the use of recycled polyester and bluesign®-approved materials Recycled materials keep waste out of landfills and bluesign®-approved materials conserve resources and protect the health of the environment, workers and wearer (you!)