The Gruper yoga exercise ball is made of ultra-thick anti-burst material,2000 micrometers in thickness and can resist up to 2200lbs.

Professional PVC material, safe and ECO, no BPA, passed SGS safety test certification.

Great for Yoga, Pilates, as active desk chairs or home workouts helper.The exercise ball can strengthens muscles, improves posture, balance, and core stability, helps prevent back and spine pain.The unique matrix massage point can massage the baby's body, relieve anxiety and help the brain grow.

Designed to fit a wide range of needs, the exercise ball is available in 55cm in diameter. 

Gruper exercise ball set, including 1 manual pump, 2 air plugs ,1 gadget and workout guide , you can easily inflate the yoga ball to the hardness you like. We provide 100% satisfactory after-sales service. If you have any questions, please contact us,we will replace or issue a quick refund for you for free.