The Nike Hyperflow YOUTH mouthguard has patented breathing channels that allow for max oxygen intake for an improved performance. The Nike Hyperflow YOUTH mouthguard includes a helmet strap and boil stick. This mouthguard offers boil and bite moldable technology for a custom fit with maximum comfort. The quick release tether provides easy on and off. The dual-density construction provides a customizable fit while maintaining the protective shape of the outer wall. $12,500 dental warranty.