Shop our Top Brand 2022 Composite Pure Softball Bats Line for Adult Men and Women. Free Shipping USA. Financing Available. Make sure to Get the Advanced Bat Break in for Performance. Pure bats weights vary from 24 to 30 oz. The length no longer then 34 Inches long. The Barrel has to be 2 1/4 inch in Diameter. Pure Slowpitch Bats vary in weights from 24 ounces to a maximum of 30 ounces. When choosing what weight your bat should be, go by your past experiences and the unwritten law on it is that it is always better to error on picking a bat on the lighter side versus the heavier side.