SEI certified to meet NOCSAE standard Recommended for youth players or older players with smaller head sizes, the MVP2310 features a non-removable dual density foam liner, ABS plastic sheel, and steel cage.  This classic shell design has large vents for good ventilation and the matching-color cage offers good looks and excellent visibility. MVP2310 - Youth - Fits head sizes 6 1/4 - 7 Recommended for youth though high school baseball. The MVP2300 mask is built with a dual density foam liner made with firm foam layer for absorbing and dispersing impacts followed by a second softer layer which is moisture...