NationTen "O" over lip mouthpiece protects lips and teeth while keeping your breathing consistent, the NationTen Brand MouthGuard has a chrome finish that allows you to stay stylish at the same time. Enhanced Protection, Optimal Airflow Full coverage lip guard prevents direct contact with your mouth to reduce impact Leveraged SCUBA design provides seamless airflow for optimal breathability Consistent breathing helps promote clarity on the field while delivering oxygen to your muscles Universal design accommodates braces and doesn’t require boiling