If your body weight is near the burst proof limit of 300 lbs. you at risk and should consider the Swiss Pro Ball instead.
This is our toughest Swiss Ball. If you exceeding 300 lbs. you are strongly advised to get the Pro Ball. This top Swiss Pro Ball is rated for static loads of 2,000 lbs. with burst-proof to a load of 500 lbs.
This does not mean the balls are puncture proof, but will help protect you from having the ball pop like a balloon (explosive deflation as one manufacturer describes it). Burst proof means that the balls are designed to slowly deflate if accidentally punctured as you can see in our Burst Test.
Burst Proof Limit: 500 lbs.
Static Weight Limit: 1,500 lbs.
Burst Proof Limit: 300 lbs.