Below was released by the NFHS and MIAA. Be sure to check out our BBCOR page, which has lots of information about these new bats.
Marucci CAT5 33-inch model
The National Collegiate Athletic Association (NCAA) has advised that the BBCOR decertification process has been implemented for the Marucci CAT5 33-inch model. Effective immediately and until further notice, this bat (Marucci CAT5 33″ length) should be considered a non-compliant bat and subject to NFHS Baseball Rules 4-1-3b and 7-4-1a.