Under Armour Braces MouthGuard is, like the name implies, intended for players with braces. Constructed of ArmourFit material, Under Armour Braces MouthGuard shapes to braces to provide protection, safety and a custom fit. Microwaveable, boilable and re-fittable. Provides a dentist-like fit, Under Armour"s ArmourFit Mouthguard is chew resistant and makes it easy to breathe and talk. Microwave for 45 seconds or boil for 30 seconds then bite for custom fit. Hydrophobic material will not absorb water and will not deteriorate.