Marmot Men's Reactor Jacket PolartecClassic 100 100% Polyester Micro Fleece 4.6 oz/yd Imported Bonded Zippered Sleeve Pocket Warm fleece jacket is equally at home keeping you comfortable on mountain slopes or cozy on the couch Polartec Classic fabrics are known for lightweight warmth and breathability; 100% polyester velour construction creates air pockets that trap air and retain body heat Made of cushy Polartec fleece, with wind flap behind front zipper to block chilly drafts Angel-Wing Movement means freedom of movement, without jacket riding up Includes limited lifetime manufacturer's warranty