Hey, I just thought of more advice!
If your son binds his chest, MAKE SURE he is NOT using an ACE bandage. Bandages you buy over the counter are NOT MADE for chest binding, and should not be used in that way. Not only does this method not work, but it causes pain and damage to the lungs, ribs, and spine.
If he does not have a binder but would like one, direct him to the following:
FTM at Underworks: http://underworks.com/ftm/
T-Kingdom: http://www.t-kingdom.com/index.htm
Mango Products: http://www.mangoproducts.net/index.htm
The T-Male Big Brothers Binder Program: http://www.thetransitionalmale.com/Binders
and, this site is just flat-out useful: http://www.ftmguide.org/
