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: Breathe Deep: Extra large breathing channel No Boiling: Instant fit and ready to go out of the box Full Protection: Your lips and teeth are covered Ultimate Comfort: Contoured design fits naturally in your mouth Strapped or Strapless: Quick release tether gives you the choice Works With Braces Legit: Meets national and high school rules and regulations No Funny Business: Latex-free, BPA-free, and phthalate-free