I have this chair at my office and have been using it for over three years. It took a while to get used to sitting on bungees, but the chair is very comfortable. I have been dealing with sciatica for years, and using this chair has decreased the pressure on the back of my leg and resolved by leg numbness after sitting all day. I bought the chair from Great Offer Stock for my home office. One of the plastic pieces that holds the bungee in place was not properly attached. I had to unattached and screw it back in. The screw hole was not aligned perfectly, but it should function properly. It was the rear bungee on the seat, so it will not get a lot of pressure. Great Offer Stock had the best price by far.