The Studio Pro 500Kg Swiss Ball and Pump - 75cm is rated at a massive 500Kg and is one of the toughest balls available. These balls have been extensively tested by SGS Laboratories for burst-resistance and static loading. Perfect for weight training, Fit Ball workouts, Yoga, Pilates or physiotherapy. The ball comes boxed complete with blaster pump. To suit: those over 5`10 Colour: Purple Weight: 2100g Safety Tests: SGS Labs tested as burst-resistant at 750Kg load. Rated as suitable for 500Kg load SGS Labs tested with a static load of over 1.7 tons without failure.