Shock Doctor MMA Double Gel Nano Mouth GuardThe Shock Doctor Nano Double Fight mouthguard offers great protection for the upper and lower jaw and features a dual arch and low profile. It is made with a hi impact Double Monocoque Shock frame which shields your gums and teeth by absorbing and dispelling all impacts. The mouth guard uses Tri Bite and MORA technology to make your bite comfortable and correctly positioned and the device boasts a breathing channel to make inhaling and exhaling