Description Mizuno’s updated MVP batting helmet provides the right protection at the plate. Offered here in two sizes for a fit that is snug, but forgiving, this helmet is NOCSAE certified and built with a durable ABS shell and performance padding. Sizing (Inches) Small/Medium 6 3/4″ – 7 3/4″ Large / X Large 7 3/8″ – 7 7/8″