Bests & Worsts Reviews from Amazon

I am a proponent of fitness and the intent of my review is not to tout the benefits of using this product. As an active individual, I decided on this item to add dimension, that I thought needed, to my routine. I also intended to use this ball as a supporting structure (chair) for my writing assignments and such. Having used "fitness balls" in the past, I selected this item on reviews. I was disappointed. This company delivered the product as promised. No issues here. After inflation and initial use, I was satisfied with the product for the first few hours. Then I noticed that the ball began to lose pressure. I was not successful in trying to find one leak. My product has multiple leaks from the vulcanized seam. I only found them after submersing the surface area in soapy water. As I am overseas now, with the product, a return is more effort than worth. Had the product worked (held air pressure), I would have been satisfied. i do not know if my defect was a one-time issue or a common problem. All I can offer is caution in your purchase.