The Reebok 55cm Stability Gym Ball features a slightly weighted base that provides stability for additional grip and helps stop the ball rolling away during your workout. It also offers anti-burst technology meaning that in the event of a puncture, the ball will deflate slowly and safely.

The gym ball is a versatile piece of fitness equipment which can be used to work the upper and lower body. A wide range of exercises can be performed including ab crunches, planks, squat variations, hamstring curls, push ups and many more.

Included in the box is a gym ball pump. It is most suitable for users between 155-167cm.