Brain-Pad Pro Plus Double Laminated Mouthguard, Strap/Strapless Combo-Pack of 12 (Black/Gray, Youth) Secures and cushions the jaw Aeroflow Clench and Breathe technology enhances breathing and endurance, breathe through the mouth even while clenching, actually opens Glotis airway 100-Percent Fits over braces and can be worn with or without a strap and Aligns jaw to allow muscles to work at 100-Percent thus increasing strength Known as the (M.O.R.A. Effect)