MLB New York Yankees Big & Tall Therma Base Premier Jacket 100% Cotton Imported Full-zip soft-shell jacket with MLB team name and comfortable Olympic collar Color-blocked inserts, banded cuffs and waistband, and reflective transfer piping Insulating Therma Base system maintains temperature and improves comfort 92-percent polyester and 8-percent Therma Base (Spandex woven and fleece bonded) fabric Windproof and water-resistant; made in U.S.; officially licensed by Major League Baseball