The Yoga Ball is an essential multidisciplinary accessory for your yoga, fitness, fitness sessions. Offered here in size S with a diameter of 55 cm, it allows you to multiply the benefits of your session by working on balance and muscle tone. Its design gives it a significant resistance to avoid bursting and allow you to perform your exercises safely. The pump provided allows you to inflate it quickly and effortlessly to adjust the pressure to your needs. Its non-slip coating ensures good stability during exercises. Maximum weight: 110 kg. Buying guide: Fitness balls Size S (55 cm): Ideal for people between 1.55 m and 1.65 m tall Fitness balls Size M (65 cm): Ideal for people between 1.65 m and 1.85 m tall.