Slowpitch Softball Bats weights vary from 24 to 30 oz. The length no longer then 34 Inches long. The Bat Barrel has to be 2 1/4 inch in Diameter. Slowpitch Softball Bats all come with Free Shipping USA. 2 Financing plans available in the shopping cart and in Checkout. Make sure to get the Advanced Bat Break in for Top Performance.