*****USUALLY SHIPS IN 15-25 BUSINESS DAYS***** Design Bill Stumpf & Don Chadwick, 1994Die-cast aluminum, Pellicle® fabricMade by Herman Miller Aeron work stool revolutionized office seating with its defining design qualities: the pioneering Pellicle suspension material and its patented PostureFit SL back support, which affords the ideal sit: chest open, shoulders back, pelvis tilted slightly forward. Combining a deep knowledge of human-centered design with cutting-edge technology, the Aeron counter-height stool is engineered with state-of-the-art adjustability, from the arms, seat height, depth, and recline. The perfect balance of ergonomics and comfort. You’ll sit naturally while also experiencing superior back support. Breathable fabric keeps you cool and comfortable. Height-adjustable footrest for comfortable extended sitting. Height-adjustable plus pivot arms. Eco-Friendly Description: LEVEL certified and Indoor Advantage Gold certified product. LEVEL® by BIFMA is an evaluation and certification system for environmentally preferable and socially responsible office furniture. The LEVEL program has three performance tiers: LEVEL 1, 2, and 3. The higher the number, the more criteria considered and met across 4 key areas: materials, environmental impact, human health, and social responsibility. Indoor Advantage Gold certification is SCS Global Services’ highest level of indoor air quality performance for furniture. The certification assures that furniture products support a healthy indoor environment by meeting strict chemical emission limits for volatile organic compounds (VOCs). Materials: Powder-coated or polished die-cast aluminum frame and base 8Z Pellicle elastomeric suspension seat and backrest Seat tilt mechanism Adjustable back with PostureFit SL™ hardware or lumbar support Standard polyurethane foam arm pads Standard 2.5-inch carpet casters Notification of Filling Contents Also Available:Aeron ChairAeron Replacement Parts Dimensions Counter-Height Stool: 27" W X 17" D X 45.6" - 49.25" H, Seat: 24.75" - 29.25" H Bar-Height Stool: 27" W X 17" D X 49" - 54.5" H, Seat: 28" - 34.25" H Care & MaintenanceWith regular care and maintenance, your Herman Miller product will provide many years of superior performance and satisfaction. To maintain quality, please follow the cleaning procedures outlined here.The instructions for the care and maintenance of Herman Miller products are provided to you as a service. No warranty is implied since results may vary.Aeron Care and Maintenance Guide