Simply put, the Nano 3D is the ultimate self-fit mouthguard. The Nano 3D features a lower profile, a closer fit and far less bulk. Its one third smaller than standard mouthguard. You'll be shocked at how small and comfortable this mouth guard is, yet how protective and effective it is. The Nano 3D is designed with integrated breathing channels that allow you to breathe deeper and speak freely. Plus, the Nano 3D is built with MORA (Mandibular Orthopedic Repositioning Appliance) engineering that may help an athlete perform with increased strength and power.MONOCOQUE SHOCK FRAME New thin-wall design, lightweight structure absorbs and disperses impacts away from point of contact.EXCLUSIVE NANO INNER WALL A semi-flexible polymer inner wall helps to enhances fit, while minimizing interference against the tongue improving breathing and speaking.TRI-BITE Aligns and stabilizes the upper and lower jaw through front incisor and rear molar, gel-filled, bite windows enhancing fit and protection.GEL-FIT LINER Custom molds to teeth for a tight, comfortable fit. Keeps focus on playing a sport, not wearing a mouthguard.MORA PERFORMANCE ENHANCEMENT When fitted and worn correctly, positions the lower jaw down and forward creating a separation of the Condyle jaw joint which may increase strength and athletic performance.