NORMAN, Okla. — Moments after her son finished practicing with his fifth-grade tackle football team, Beth Sparks examined his scuffed and battered helmet for what she admitted was the first time. She looked at the polycarbonate shell and felt the foam inside before noticing a small emblem on the back that read, “MEETS NOCSAE STANDARD.”
See more
http://www.nytimes.com/2010/10/21/sports/football/21helmets.html?_r=1