Unsurpassed up-to-the-minute ergonomic design arrives in the form of the white Frame Managers chair with breathable mesh seat and back. This intelligently designed chair provides both comfort and support to your body and mind with an amazingly strong yet lightweight breathable mesh seat and back that conforms to your body's unique contours. The added adjustable lumbar support affords for hours of cozy seating, minimizing fatigue and alleviating pressure on the spine. A one touch pressurized pneumatic seating adjustments allows you to elevate to the perfect height, while the 2-to-1 synchro tilt control, with adjustable tilt tension helps to personalize this chair to everyone's particular needs. Height adjustable padded 2-way flip arm allows for a comfortable and cozy place to rest your hardworking hands and a heavy duty white coated nylon base with end caps and oversized dual wheel carpet casters lets you to glide effortlessly while protecting the base from scuffs & scratches.   Dimensions: Please note: Orders of 4 or more chairs will ship with a freight carrier, and are not traceable via UPS. Please allow 10 days before contacting Overstock regarding any freight carrier shipping concerns.