Ergonomics Chair - Granada Low Back Multi-Tilter Ergonomic Computer Chairs in Dark Blue OVERVIEW: Comfortable ergonomics chair designed with lumbar support, contoured cushions and waterfall seat edges, on a five-star base with dual-wheel carpet casters. COLORS & MATERIALS: These ergonomic computer chairs are available in blue sapphire fabric and a black reinforced nylon base that can blend in to any work environment. ERGONOMICS: Adjustable ergonomic chair features that can encourage health and wellness in the workplace: Tension Adjustment, Chair Tilt Lock, Seat Height, Back/Lumbar Height, Seat Depth, Seat Angle Adjustment, Back Angle, Arm Height, Waterfall Seat Edge, Properly Contoured Cushions, Width Adjustable Arms, Center-Tilt Movement- making this a very comfortable office chair that will support you during long days at the office. AWARDS & CERTIFICATIONS: Greenguard Indoor Air Quality Certified: These ergonomic computer chairs are in compliance with stringent emission guidelines set out by the Greenguard Environmental Institute. Level 3 Certified: Conforms to the ANSI/BIFMA e3-2012 Furniture Sustainability Standard. WARRANTY: Our office furniture chairs are intended for a standard eight hour, single shift work day for users weighing up to 300 pounds, and are covered by a Limited Manufacturer's Warranty.