The premium pet jersey is made of 100% polyester and features a jersey mesh front and dazzle fabric back. Full color sleeve and collar decoration with printed team name and team logo will have your pet looking to get into the game! How to measure - Length - Run tape from the base of your dog’s neck, at the collar, to the base of their tail, where the back ends and the tail begins. Girth - Start at the widest part of your dog’s chest, right behind the front legs. Don’t forget to leave a little wiggle room! Neck - Measure where your dog’s collar naturally goes. Remember to leave a little slack. Two of your fingers should comfortably fit underneath the measuring tape. Made by Little Earth.