The Ultra 2 Shock Transfer Core has been structurally refined to provide an even deeper, form-fitting bite. Simply place this advanced compression gel-fit guard in your mouth and experience what all the hype is about. By allowing your teeth to settle in to the aero-cushioned anti-shock pads, you're providing comfortable and secure jaw cushioning. This mouthguard also comes fully equipped with a convertible tether. Low profile. Speak and breathe easy. Increased athletic performance. High-impact protection.