Each Oceanic chair is manufactured using 1.45 lbs of recycled ocean bound plastic. Ergonomic features include a suspension seat, which contains elastic mesh bands embedded in high-density, highly resilient molded foam, for added comfort and support. Synchro-tilt functionality with tilt lock allows the seat and back to tilt at different degrees for optimal ergonomic posture. One-touch pneumatic seat-height adjustment helps you instantly select your preferred position depending on your task. 4D arms adjust up and down as well as forward and back, and the arm pads pivot to the left or right, providing superior ergonomics. The ergonomic 4D arms adjust up and down as well as forward and back, and the arm pads pivot to the left or right. Suspension fabric seat has embedded elastic mesh bands in resilient molded foam. Adjustable synchro-tilt controls with tilt lock for customizable angles. One-touch pneumatic seat-height adjustment for quick & easy positioning. Recommended for professional use 8-10 hours per day. Weight capacity tested to support up to 275 lbs. 5-star base with dual caster wheels offer smooth mobility. Backed by the manufacturer's limited lifetime warranty. Eco-conscious choice is manufactured using 1.45 lbs of recycled ocean bound plastic with US and foreign components. ANSI/BIFMA Compliant - This product has been tested and verified for compliance with rigorous performance requirements and safety standards related to specific furniture products. Contains Recycled Content - See Specs for Details.