The Bush Business Furniture Custom Comfort High Back Mesh Executive Office Chair offers a high quality seating solution at an affordable price. Customization features include a convenient lever that instantly adjusts the chair's height to accommodate taller or shorter users, a contoured backrest with cushioned lumbar support that can be moved up or down to provide personalized ergonomic comfort, and a tension knob underneath the seat that turns to change the rate and ease of recline. The height, width, depth and angle of the armrests can also be quickly set to the perfect position for your next project or assignment. The high back design limits strain on the upper back, shoulders and neck for long-lasting support whether you're putting in a full day at the office or just browsing the web. Five dual-wheeled casters allow the chair to roll freely throughout your workspace while 360 degree swivel control provides full range of motion for collaboration. The heavy duty nylon base withstands years of use and allows the computer chair to support up to 275 pounds. Both the seat and back feature lightweight, breathable mesh upholstery for a modern look that works well in home and professional offices. This commercial-grade Ergonomic Office Chair is tested to meet ANSI/BIFMA quality standards for safety and performance and is backed by the Bush Business Furniture 5 Year Manufacturer's Warranty.