Shock Doctor Double Braces Mouth guard. INSTA-FIT a special Orth-Channel fits around both upper and lower teeth brace brackets and adapts to changes in tooth position as braces are adjusted, providing an instant fit and protection from lacerations. BREATHING CHANNELS through the center of the mouth guard allow for freer flow of air and easier breathing. 100% MEDICAL-GRADE SILICONE for ultimate comfort, no boiling or fitting required. Meets NFHS High School wrestling rules required full coverage of upper and lower brace brackets in all wrestling meets. ADULT OR YOUTH!