COMFORT WITH STYLE: Generously padded for a semi-plush comfort for long hours of sitting. This chair features a single, channel tuft that adds modern detail without compromising on clean lines. Upholstered in a soft bonded leather and available in 4 colors: Black, Brown, Gray, and Cognac. ACTIVE SITTING: A mid-back design encourages a natural upright posture. Subtle ergonomic contours offer lumbar support in the lower back and natural mobility in the upper body and arms. SERTA FOAM & CERTIFICATION: All Serta chairs use quality non-recycled, non-toxic foams, exceed minimum industry testing standards and are certified by the American Chiropractors Association. USA Customer Support. DURABLE CONSTRUCTION: Sturdy metal base sits on 360º smooth-rolling casters, with an easy to reach seat-side lever for height adjustment and tilt-lock. Supports up to 275 lbs. EASY ASSEMBLY: Step-by-step instructions make assembly simple. Two people are recommended. Estimated time of 35 minutes.