MLB Chicago White Sox Therma Base Elevation Premier Jacket 100% Polyester Full-zip soft shell jacket with olympic collar, colorblocked inserts, banded cuffs and waistband Front authentic logo woven emblem and molded sleeve patch 92% Polyester / 8% Spandex woven and fleece bonded Therma Base Fabric is windproof and water resistant Four way stretch for maximum comfort Officially licensed by Major League Baseball and made in the USA