Mouth guard, Wilson, gel, braces, black, SR Our 35-second, custom fit Mouthguard features two separate materials. The upper part of the Mouthguard that touches the braces will not change shape after boiling, therefore it will not get caught under the braces' wire. The lower part of the Mouthguard is custom fitted to the bottom of the teeth after boiling. Provides outstanding protection against tooth injury, jaw injury, and mouth contusions.