Adult baseball bats feature a 2 5/8 inch barrel diameter and a -3 length to weight ratio. Many players view an adult baseball bat as a college or high school bat. On this page, you'll find the hottest 2013 bats and 2014 bats for sale, as well as models from previous years. There have been many changes to the rules and regulations regarding BESR and BBCOR standards for adult baseball bats in the past couple years. Be sure to check out our baseball bat Resource Guide to get up to date on the most Frequently Asked Questions when it comes to purchasing one of our BBCOR baseball bats for sale. Also, if you are unsure of what baseball bat to buy, visit our Adult Baseball Bats Reviews page to see what everyone else is saying!