The newly advanced Air Force Duo-Defense Mouthguard is designed and engineered exclusively for the rigors of combat sports. The improved duo-layered design is infused with a super shock absorbing EVA upper layer and a clear polypropylene impact resistant lower chamber for increased jaw protection. Strategically located “Air Force” chambers in the rear channels and front of the guard offer maximum air intake and optimal breathing during battle, and aids speaking ability. Includes a vented antimicrobial custom carry case. Take off with the reengineered Air Force Duo-Defense!.