Oakland Athletics hoodie sweatshirt by New Era in collaboration with Big League Chew. A must for baseball fanatics, this cotton-poly terry sweatshirt features a graphic at the front, complete with a drawstring hood, kangaroo pocket and ribbing at the cuffs and hem. For over 100 years, New Era has been the go-to for official on-field hats for the MLB. Their baseball hats, apparel and accessories reflect their heritage with quality craftmanship, iconic designs and staple fits.