Root for your favorite team when you wear the Pro Standard Men's Houston Astros Souvenir Short Sleeve Warm-Up Jacket. It is made of 80% cotton and 20% polyester. The short sleeves keep you cool, and its collar neckline creates an official jersey look. The snap front creates an adjustable closure. Pro Standard Men's Houston Astros Souvenir Short Sleeve Warm-Up Jacket Navy Blue, Small - MLB Ss/Ls/Sl/Mck Tees at Academy Sports