For more than 75 years, Serta has been an industry leader in comfort products worldwide. That tradition of innovation and quality continues today. From a brand that is synonymous with quality, comfort and style, the Serta Back in Motion™ Health & Wellness Manager's Office Chair offers an amazing new support feature called Active Seating Technology (AST) (see below for case study results). AST offers continuous motion and support by pivoting the seat and lumbar with you as you move. AST also has been shown to replicate the pelvic tilt exercise which can be good for reducing seated discomfort. The sum total offers your back a continuous support experience you've never felt before in an office chair. Next, is the soft and supple upholstery in smooth black eco-friendly bonded leather with contrast stitching. The deep, ergo layered body pillows with breathable perforated zones offer the body a serene and tranquil seating experience. Hand sculpted Iridescent Silver painted arms with soft padded armrests for exceptional hand, wrist, and forearm comfort. Measures 25.25" wide by 28.25" deep by 45.5" high. It is delivered in 1 box measuring 27.75" long by 16.75" wide by 26.25” high. 1 year limited warranty. Product assembly is required. Designed in the USA. Manufacturer style number is 43521