The Reebok women's training 55cm stability gym ball has a weighted base that grips the ground and stops it rolling away during use, keeping you stable and safer when exercising. This two-tone, anti-burst Swiss ball is a great choice for performing sit-ups and many other exercises that focus on core strength, stability, balance and general fitness. The exercise ball is 55cm (21.6'') in diameter and suitable for users between 155cm and 167cm (5ft 1'' and 5ft 5.7'') tall. The fitness ball is made using high-density rubber for increased durability and it is supplied with a workout DVD and a pump to get you going right away.
Best Price: £32.99 from Sweatband.com