The Reebok Women's Training 55cm gym ball is a slightly smaller exercise ball made for users between 155cm and 167cm (61'' x 65.7'') tall. Working out with a gym ball allows you to perform a number of quality exercises to target your core and improve posture, flexibility and your general fitness. Examples of possible exercises include tricep dips, crunches, the plank, shoulder curls and press and side squats, and there is a workout DVD included to help you on your way, as well as a pump. The Swiss ball uses anti-burst technology to make sure that if there is a puncture deflation will be slow and safe, reinforcing your confidence in the equipment. Made from high-density rubber, the exercise ball's diameter is 55cm (21.6'') and the maximum user weight is 110kg (242.5lbs).
Best Price: £23.99 from Sweatband.com