The A3 Performance Suits are made of the finest PBT polyester, providing a comfortable fit and superb color fastness. The suits are ideal for training, in-season racing, life guarding or relaxing. Engineered with reinforced seams at shoulders and stress points, this suit is built for action!  There are 3 backs - flashback has thin straps and a low rise over the butt, x-back has thin straps, more coverage on the back and a high rise over the butt, sprint-back has thick straps and a high rise over the butt.