SISU Mouth Guards Aero 1.6mm Custom Fit Sports Mouthguard for Youth/Adults SISU Aero mouth guards offer premium, warrantied dental protection for players age 11 and up, including adults At only 1.6mm thick, the ultralight design of the Aero is 50% thinner than conventional sports mouth guards, providing maximum comfort and convenience The slim, custom fit makes it easy to talk, breath and drink without removing the guard, which contributes to better hygiene Diffusix technology scientifically distributes impact forces from football, hockey, lacrosse, basketball, boxing and other contact games SISU Original mouth guards changed the game with a fully customized fit that offers maximum protection in an ultra-slim profile