Pro-Tec CPSC The Classic - Glow in the Dark [Small] Helmet Pro-Tec CPSC The Classic - Glow in the Dark [Small] Helmet. We've taken our timeless Classic design and equipped it with EPS foam for added protection and to meet CPSC/CE certification. Our EPS foam liner mimics the comfort and feel that we've become known for in our 2-Stage soft foam skate helmets. Size: 20.9" - 21.3" / 53-54cm