This gym ball is perfect for toning your body, strengthening your back, and stretching. It is available in 3 sizes (size 1, size 2 and size 3). You’ll love: - Its durability - Its versatility - Its grip You’ll be amazed by: - Its comfort - Its design and new colours - The exercises that come with the ball. 55cm diameter gym ball. Durability : Extra thick to make it safer and longer lasting. Versatility : Use it for fitness workouts, Pilates, stretching, and more. Grip : The shiny lines are non-slip and allow you to be more precise. Maximum user weight 130kg (20st 6lb). EAN: 3608418939850.