Mizuno MVP One Size Batter's Helmet w/FP Mask NOCSAE approved Product Features Durable ABS plastic shell Strategically placed ventilation holes Drill hole location for mask Removable washable DryLite padding for breathability and moisture management Without mask has pre-drill holes Removable chin strap snap Can not be used with any ball smaller than an 11 inch softball Unique matte 2-tone finish