This anti-burst exercise ball is a great multi-purpose fitness aid. Perfect for gym workouts such as core strengthening, ab training, gymnastics and also for Pilates, yoga, and exercises to help during pregnancy. The ball can even be used as a replacement office chair or stool to help improve posture and relieve back pain. Tough high quality material with ribbed surface for grip. The push pin valve allows easy inflation and deflation and it comes with its own hand pump.Approximate diameter: 65cmPlease note: lifestyle photographs for illustration, 1x product listed supplied only. Please read all packaging and instructions thoroughly before use.