Hi. My son is new to Bmx this year, and I'm a newbie at this, lol. would like to buy him Bmx long sleeve shirt and Bmx pants....went to Honda, they don't have Bmx clothes, just motorcross. Do the kids wear the motorcross clothing, or is there somewhere in town that sells kids Bmx clothes? And do the kids wear knee pads under pants, if so, what kind?.... If anyone has any used clothes, (he's size 8); let me know, thank you