The Battle Oxygen Lip Protector Mouthguard offers excellent protection combined with performance-enhancing airflow. The Oxygen lip guard features a 293% larger breathing hole than competitor models resulting in 184% better airflow. More efficient breathing lead offers several benefits including faster recover, clearer thought and better decision making. Includes 1 lip guard. Designed by dental, medical and athletic professionals for exceptional performance. Increases oxygen benefits include faster recovery, increases performance, clearer thought, increases oxygen to muscles and brain, and better decision making. Promotes proper jaw alignment. The Battle Oxygen Lip Protector Mouthguard works with braces.