product description1. Built to last: Start optimizing your health quickly. The fitness ball is inflated using the included hand pump. In minutes, you can use it as a stability ball in any type of fitness training like yoga or Pilates, or as an office chair to correct your posture and support your back as you work.2. Non-slip ribbed body maintains contact with the skin: The PVC body has horizontal ribbing around it - easy to hold without slipping when throwing, bouncing or squeezing the ball, even when sweating a lot.3.Whether it's used as a pregnancy ball, a physiotherapy ball, a fun bouncy ball for your kids, or a professional ball for physiotherapy, it won't let you down! Enjoy a soft and comfortable stretchy texture when pressed.4. Sitting posture correction and massage: This inflatable balance ball can be effectively used as a multifunctional office ball chair. It constantly reminds you to maintain a good sitting posture as your various body parts actively make subtle adjustments to maintain balance, allowing you to sit upright automatically and increasing overall blood circulation. The soft PVC surface creates a massaging effect that relieves your fatigue while working at your desk.