Shock Doctor Gel Max Convertible Mouth Guard New gel-fit liner where your teeth sit makes fitting the Gel Max correctly easier than ever before The Gel Max mouthguard delivers essential protection and comfort with a convertible tether that allows the mouthguard to be used strapped or strapless Exoskeletal Shock Frame is a heavy duty rubber frame that provides impact protection Gel-Fit Liner custom molds to teeth for a tight, comfortable fit Integrated breathing channels Triple layer mouthguard design offers protection and fit that outperforms conventional mouthguards