The Realspace “Axton” Big & Tall, bonded leather high-back chair (in dark gray and chrome) is the chair I was issued by my employer, based on a recommendation made by another “tall” employee. With the chair, RealSpace included a multi-lingual booklet with an inventory of parts, instructions for assembly and adjustment, and with the warranty.
https://www.amazon.com/Realspace-Bonded-Leather-High-Back-Chrome/dp/B01KMPCNIE