SISU NextGen is the most powerful mouth guard our scientists have ever built. With its unmatched quality and functionality, SISU NextGen was developed for the athlete. Made from non-compressible, thermal polymer, SISU NextGen is designed to withstand even more impact. Nevertheless, amazingly 1.6mm thin, SISU NextGen delivers even more protection with its scientifically revised hole pattern. Custom fit, remoldable SISU NextGen features a wider bite pad, rounded edges, and improved ductility to allow athletes to talk normally, breathe naturally, and stay hydrated during play. Witness Evolution Sisu NextGen is the latest development in mouth guard technology from the makers of Sisu Guard. Simply put, its the strongest mouth guard weve ever built. With its unmatched quality and functionality, SISU NextGen was developed with the athlete in mind, and its unique new features focus on added protection and comfort. More Protection The Aero is made of a high-tech thermoplastic material that is 30% stronger and has 8x higher tensile strength than conventional mouth guard materials. This means that no matter how intense it gets during playtime, your SISU Aero has your back and teeth. Far less mouth guard. The most unique feature of the SISU Aero is its super thin, ultra-light design. With a slim 1.6 mm, the Aero is 50% thinner than your standard mouth guard. Combined with its fast, individual and reformable fit, you will completely forget that something fantastic and plastic is in your mouth. SISU NextGen is the most powerful mouth guard our scientists have ever built. With its unmatched quality and functionality, SISU NextGen was developed for the athlete. Made from non-compressible, thermal polymer, SISU NextGen is designed to withstand even more impact. Nevertheless, amazingly 1.6mm thin, SISU NextGen delivers even more protection with its scientifically revised hole pattern. Custom fit, remoldable SISU NextGen features a wider bite pad, rounded edges, and improved ductility to allow athletes to talk normally, breathe naturally, and stay hydrated during play. Witness Evolution Sisu NextGen is the latest development in mouth guard technology from the makers of Sisu Guard. Simply put, its the strongest mouth guard weve ever built. With its unmatched quality and functionality, SISU NextGen was developed with the athlete in mind, and its unique new features focus on added protection and comfort. More Protection The Aero is made of a high-tech thermoplastic material that is 30% stronger and has 8x higher tensile strength than conventional mouth guard materials. This means that no matter how intense it gets during playtime, your SISU Aero has your back and teeth. Far less mouth guard. The most unique feature of the SISU Aero is its super thin, ultra-light design. With a slim 1.6 mm, the Aero is 50% thinner than your standard mouth guard. Combined with its fast, individual and reformable fit, you will completely forget that something fantastic and plastic is in your mouth.