Take a deep breath with 10% more flow capacity via our AirFlow breathing channel. The updated design and platform relax the jaw and prevent teeth from blocking the breathing channel, adding more flow capacity. Our flexible, proprietary Shock Doctor polymers and integral bite pads ensure max comfort and easy, no-mold fit. No more "winded" in the end zone. Features: Extra large breathing channel Instant fit and ready to go out of the box. No boiling required. Provides full protection for your lips and teeth Contoured design fits naturally in your mouth Quick release tether gives you the choice to use a strap or not Works with braces Meets national and high school rules and regulations Latex Free, BPA Free, Phthalate Free