One size fits most mouths - even those with braces - and the guard acts as a natural shock absorber. The UFC mouth guard features an easy-clip removable strap, air-flow channels allow for maximum breathability, and an advanced composite material that allows multiple reboilings and remoldings. You'll breathe easier, too, knowing you're backed by a $30,000 dental warranty, which offers twice as much coverage as any other mouth guard on the market.