A soft inflatable mini exercise ball for Pilates, core activation, balance and mat-based mobility work. It is available in four diameters, 20 cm, 22 cm, 25 cm and 30 cm, so the ball can be matched to different exercises, body sizes and class levels. Inflation level sets the firmness, letting the same ball be used soft for gentle stabilisation work or firmer for core and balance training. PVC specification, product weight, surface feel, colour and printed logo are produced to order, so confirm the diameter and firmness you want before buying.Key details:Materials: PVCDimensions: 20 cm, 22 cm, 25 cm or 30 cm diameter