Regular: Watermelon Sugar Free, 120 pieces (320g) - Hard gum | Optimal Shore Rigidity for Jaw Growth As your bite gets stronger

As your bite gets stronger

Protein 0g

The Advanced Program combines the regular and extra tough versions of Stronger Gum

had to break down hard materials and then chew on them for long periods

Hardest/toughest chewing gum in the world

Regular: Watermelon Sugar Free, 120 pieces (320g) - Hard gum | Optimal Shore Rigidity for Jaw Growth As your bite gets strongerStronger Gum is used in Dr. Mike Mew's clinic, the leading doctor in craniofacial orthotropics. Your browser does not support our video. The Right Combination of Hardness & Toughness Hard and tough are not the same thing. Stronger Gum uses the right combination of hard and tough materials to activate the jaw muscles maximally. Jaw muscles respond best when they are worked out for at least 15 30 minutes at a time. Programs For regular Stronger Gum,