It's a different breed out here. New Fur Max AirFlow gives you the heat to get to the next level. 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.