Best I recall, Baum bats are wood but not in the traditional sense. They are an outer shell of long wood fibers/strips (I forget the exact shape) bonded together with epoxy and there is an inner shell and foam composite core. So, they have sort of a wood feel and sound. But they are far less likely to break and tend to perform the same for much longer period of time. Some love the performance and swear by them but consensus is they make a great practice bat and bat to use when wood is required but you don't want to deal with breaking but not quite the same feel, sound and performance of better wood.