Our anti-slip stability ball leads the industry in thickness, making it burst-resistant to 2,000 lbs. That is ONE TON of confidence for even the most rigorous and sustained workout. Even if you donít actively participate in a fitness plan, simply using the Exercise ball as an office chair will improve your balance, flexibility and back health. The time you spend balancing on a stability ball forces you to use your core muscles, which not only tones your midsection by also properly aligns your spine to alleviate back pain. The Exercise Ball is highly portable so you can use it in your work cubicle, or take it with you to your yoga or Pilates class. We even include a convenient hand pump so you can inflate your stability ball anywhere with ease. Exercise ball is one of the must have fitness accessories.