The SISU Aero offers more protection with less mouth guard for players ages 11 and up, including adults. All SISU guards can be molded (and re-molded) to the individual user at home with hot water. Guard is 2.4mm thick, and players wearing the SISU Max can talk, breathe and hydrate with the guard in-place. The SISU Max is engineered with Diffusix technology to reduce risk of dental injury during competition. SISU guards are compatible with braces, but a dental professional should be consulted for proper fitting (adult-sized guard recommended for all ages wearing braces).