Nike Amped Mouthguard - Adult Get pumped to make a play in the Nike Amped Mouthguard. This dual density mouthguard features a fit groove that conforms to the teeth surface. A bite pad on the rear molar provides additional cushioning for the teeth. The strap insert hole provides patent pending dual release helmet strap for improved safety. Boil-and-bite moldable for a custom fit. Includes a $12,500 dental warranty. One size fits most.