The STX Rival Junior Helmet is the first ever helmet made by STX specifically for youth players. Offering a step up in comfort from other adult-size helmets, the Rival Jr. provides a noticeably improved fit and feel with minimal design alterations on the exterior shell. The Rival Jr helmet has maximum size ventilation holes to increase the flow of air and keep players cool on the field. The liner of the helmet is soft foam for comfort, combined with extra soft cheek pads. Intended for players under age 12, this helmet is one size fits most and uses a sliding back piece that is adjusted with hook and loop straps to fit to the player's head. It fits player heads up to 22 inches in circumference. To measure, just take a flexible tape measure and wrap it around the widest part of your players head from their forehead around and back again. If you don't have a flexible tape just use a piece of string, mark it, and then lay the string along a regular tape measure.