SEI certified to meet NOCSAE standardAll System Seven batting helmets use a high impact resistant ABS shell which is design for maximum coverage in critical areas (the back of the neck and cheek areas). The interior uses Ultracool lined foams to stay cool and dry even on the hottest days. Large vents around the helmet also help you stay cool and are strategically placed for maximum shell strength.This youth one-size-fits-most batting helmet comes with our AFx Fastpitch cage pre-attached. For use with softballs only.