The SISU Aero Mouth Guard offers more protection with less mouth guard. Ideal for soccer, hockey, roller derby, lacrosse, basketball, and other contact team sports, SISU mouthguards feature a wide bite pad, rounded edges for comfort, and easy mold-ability to ensure a perfect fit. All SISU guards can be quickly and easily molded (and re-molded) at home with hot water. At only 1.6mm thick, or 50 percent thinner than conventional mouthguards, players wearing the super slim Aero can talk, breathe and hydrate with the guard in-place. Scientifically engineered with Diffusix technology, the non-compressible, perforated guard material distributes forces over a larger area to reduce risk of dental injury during competition. Guard is compatible with braces, but a dental professional should be consulted for fitting (Sizes Medium and Large are recommended for all ages wearing braces). Available in three Sizes: Small fits the mouths of children ages 7-10, or athletes up to 5 feet tall; Medium fits average mouths, or athletes between 5 feet and 6 feet tall; Large fits larger mouths, or athletes over 6 feet tall. Guard is free of BPA, PVC, phthalates, and latex. Made in the USA.