Fitness-Mad's Studio Pro Swiss Ball is rated at a massive 500 Kg and is one of the toughest balls available. Our gym balls have been extensively tested by SGS Laboratories for burst-resistance and static loading. Perfect for clubs, gyms, studios as well as weight training, Fit Ball workouts, Yoga, Pilates or Physiotherapy. Features: Recommended User Height: Best for people over 5'10" Weight: 2.1 Kg Material: 6 Phthalate and Heavy Metal Free PVC Please Note: This gym ball is unboxed and no pump or free workout guide is supplied SGS Labs tested as burst-resistant at 750 Kg load. Rated as suitable for 500 Kg load. SGS Labs tested with a static load to over 1.75 tons without failure. Never leave the Swiss Ball near a heat source. For our full Swiss Ball safety information on using and inflating our Swiss Balls correctly, please download the Swiss Ball Safety Instructions Manual from the downloads tab. SPECIFICATION: Brand Fitness Mad Usage Home Use, Commercial Use Condition Brand New Warra