This mini exercise ball packs a powerful punch. Use it during your workouts to create instability, which - over time - will help build your stabilizer muscles. Easily adjust the firmness and pressure of your ball by inflating or deflating the air inside.
- XS = 12.7cm diameter
- S = 19cm diameter
- M = 25cm diameter
- 100% Non-toxic PVC
- Hypoallergenic and phthalate free
- Anti-burst
- Includes straw and plug