Exclusive Gel Enforced Lining® with Aerovent® Intense-Shox tri-level core helps direct impact away from point of contact to stabilize and shield the teeth. GEL® liner custom molds to teeth for a firm, comfortable and secure fit during intense action. Added air-cushioned core coverage in molars and front for increased jaw compression rate and resistance. Aerovent® air-release system aids breathing and speaking. Vented custom carry case included.