6mm Mouth Guards’ transparency is better than the traditional one. The walls of the mouthguard are thinner than before which can prevent irritation and be more comfortable. Scientifically designed gap, maximizing the airflow. Perfect For: bruxism, teeth grinding, TMJ teeth protector, an athletic dental guard and teeth whitening tray. Whether you are kid, youth or adult if you clench, grind or bite their teeth at night, daytime, nighttime. Our guards are a perfect solution for everyone. Each mouth guard is easily trimmed to fit any mouth size. Our 6 BPA Free mouth guards are made of high quality DuPont EVA materials. Our nightguards are easy to clean and can be reused. High quality retainer case included. If we cannot help you get a good result with our product, or if you simply do not want to give it another try, we will be sure to help you in any other way we can.