Smugdesk 0581A9 High Back Executive Office Ergonomic Heavy Duty Computer Bonded Leather Adjustable Desk Swivel Comfortable Rolling Chair, Large, Classic Black Ergonomic Design - The curved design of this mesh chair will reduce back tension and make you feel extremely comfortable. The ergonomic back is made of integrated frame and special mesh to ensure more durable than normal material. The seat be covered sandwich mesh, and the high density upholstered seat padding provides ultimate comfy sitting experience throughout the day. Adjustable & Rocked Function - The functional mechanism of this task office chair can adjust the seat height according to your own height, weight and habit. The armrests height adjust will make your arm be in the most enjoyable position in working time. The whole chair can rocked back and forth, provide an extra relax after your busy working for a long time. Comfortable Features - Breathable Ventilated mesh of this computer chair make you feel more better during working time. Along with 360 swivel allows you to customize your position. The durable nylon base is heavy duty design to ensure safe for whole-day use. Smooth Rolling Casters - Polyurethane caster ensure smooth and quiet moving on any surface. Soft PU material casters can protect your favorite hardwood floor, carpets and other mats. Easy to Assemble - We prepare the tool and screws in package. It's easy to assemble this mesh task chair when you open the box. Maximum capacity of 250lbs. We provide free replacement or money back guarantee for any quality problem within 30 days and a free replacement exchange within 12 months.