Thank you for your vigilance. Some people have no idea how hard it is to find a reliable source to get a good high end chair. It's not like going to IKEA to get something for $150. Not many of us can afford dropping $1500+ on a chair.
Hello there! You can check the rear of the chair's backrest frame. There are raised dots behind the upper lip of the back frame: one dot indicates Size A (Small), two dots indicate Size B (Medium), and three dots indicate Size C (Large). Best regards. OfficeLogixShop Team
