The Bat-Ball Coefficient Of Restitution (BBCOR) now requires that non-wood (both composite and aluminum) bats are more like wood bats at both the high school and college level. It’s more important than ever to look for the BBCOR certified bats mark identifying that your BBCOR baseball bats are approved. Count on Easton for BBCOR bats that satisfy the NFHS rule change.