The Shock Doctor ® Adult Nano Double Mouthguard provides maximum protection in a compact product. Featuring an impressive design this mouthguard is complete with a full wall upper/lower protecting you from impact. Keeping you focused on the game is a GEL-FIT™ liner that custom molds to teeth for a tight, secure fit. Wear it the way you want it, coverts into strapped or strapless. FEATURES: Monocoque Shock Frame® - Thin wall design that absorbs and disperses impact Tri-Bite - Meant to align and stabilize upper and lower jaw, gel filled bite windows Gel-Fit™ Liner – Custom molds to teeth Mora Performance Enhancement – When worn correctly will create separation of the lower jaw from the Condyle jaw joint that may increase strength and performance Convert into strapped or strapless Center breathing channels Shock Doctor Adult Nano Double Convertible Slim Fit Mouthguard