Now every athlete from youth to high school to college to pro's can wear DEFENDER Custom Mouthguards and perform at their highest level. No concerns about breathing, breaking the mouthpiece, disguarding or other physical issues. The DEFENDER Mouthguard sits in place so no one can and no person can ruin your mouthpiece. You will compete better, breath easier and there are many pro's such as Ray Rice of the Baltimore Ravens feeling that good.