Add new challenges to your workout with the Merrithew Mini Stability Ball. Merrithew's mini exercise ball helps you massage and tone the deep muscle systems of your body. By creating instability it activates your deep stabilizers, while improving strength and balance. Your mini exercise ball can also help you to maintain proper shoulder, hip or back placement during workouts.
- Compact & portable travel companion
- Non-toxic, hypoallergenic and phthalate-free materials