I just got the -3 h2 baseball bat (the orange one) for next year and i don't know if i have to break it inI know aluminum bats are best out of the package- you don't have to break them in - but composite bats should be broken in so they don't crack as easily and have more popthe h2 has as composite handle and aluminum barrel so i don't know what to do on these half and half bats.
Breaking it in is not necessary but if you have a few swings in it, it wouldnt hurtDont over use it but just do some hitting off the tee, some soft toss and maybe a little batting practiceJust to get used to the bat and know how it feels.
Check out the link below it describes the different types of wool used to make oriental rugsBest of luck!