Origin: CN(Origin)
Material: Food grade silicone
Function: Comprehensive Fitness Exercise
Model Number: Muscle training ball
Yellow-first grade intensity: 30lbs
Cyan-secondary strength: 40lbs
Gray-three-level strength: 50lbs
Type 1: jawline exercise ball
Type 2: jawline exercise chew ball
Type 3: face jawline exercise ball
Package Included: 1pc facial muscle training ball