Rawlings Youth CFTB Coolflo T-Ball Batting Helmet Fits players with a hat size of 6 1/4 in - 6 7/8 in or a head circumference of 19 1/2 in - 21 1/2 in. To measure your player"s head circumference, measure around the head just above the ears.This Youth Coolflo Batting Helmet is designed for the younger T-ball or youth player. It features a double ear design that is NOCSAE approved and is pre-drilled for face guards and contains snaps for use with a chin strap. This helmet also offers dual density foam for protection and a comfortable fit. The one size fits all design contains 15 individual air vents to keep you cool and dry and a pony tail channel for a comfortable fit. Features: Durable ABS shell High tech designShell: Exclusive Coolflo venting technologyPre-drilled for Rawlings face guardsMeets NOCSAE Safety standards