Question: are composite wood bats legal in mlb?
Answer: Wood composite bats do not include any bat that has any metallic component. 16U Girls For 16U Girls championships, a max barrel of 2 3/4” with (i) a 1.15 BPF (Bat Performance Factor) or (ii) USA Baseball Model is permitted. ... 18U For 18U championships, only wood bats, bamboo bats and wood composite bats will be allowed.