The Ultra has a weight capacity of 300 lbs, and we've just released the Ultra 2, which can handle even more - up to 320 lbs. We've designed both models to withstand heavy use and maintain their shape over time, so you can sit comfortably without worrying about the chair breaking down.
Thanks for your interest in the product. You can take a deeper look here: https://www.autonomous.ai/office-chairs/autonomous-chair-ult...?