[Riddick shows him how to wrap his left hand, over the wrist and woven through the fingers, again and again, then hands him the tape roll so he can wrap his other hand as he was shown.]

Remember not to skimp when you wrap, otherwise you'll break your hand or wrist every time you throw a punch at the bag. Now, stand like I showed you [he pauses to give Jimmy time to wrap his hand and get into position.]