Work in comfort with the Olympus Big & Tall Chair that provides all-day ergonomic support. 400 lb. weight capacity supports most users. Back and seat feature 3" of contoured foam padding for maximum comfort and support and are upholstered in breathable black fabric. 22" wide x 21-1/2" deep seat adjusts in height from 17" to 21". Sturdy, ergonomically contoured back also adjusts in height and offers a locking tilt. Back size is 21-1/4" wide x 29" high. Heavy-duty, five-star, chrome-plated base and 3" dual casters provide superior durability and maneuverability.