[Healthy Work] Perfect for alternating between standard desks and counter heights, this ergonomic drafting chair features a pneumatic seat height range of 24.5'34.1', making it ideal for standing desks, drafting tables, studios, labs, classrooms, and clinics. [Ergonomic Comfort] Contoured seat with built-in lumbar support follows your spines curve, while a waterfall edge eases leg pressure. Built-in spring pockets deliver responsive cushioning for lasting comfort. [Fully Adjustable] Customize height, tilt tension, and 360° swivel. A height-adjustable chrome foot ring and flip-up armrests fit different users, while smooth casters allow effortless movement. [Premium Build] Bonded leather with double stitching adds durability and style. Perforated back improves ventilation, and all parts meet BIFMA safety standards, supporting up to 295 lbs. [Easy Assembly & Warranty] Quick 25-min setup with clear instructions. Backed by a 12-month warranty for lasting performance and peace of mind.