This chair was designed to meet your around the clock needs. Also known as multi-shift task chairs, a 24-hour office chair is designed for extended use or multiple-shift environments. The big and tall design also aids in accommodating larger body types. This chair has been tested to hold a capacity of up to 350 lbs., offering a broader seat and back width. The high back extends to the upper back for greater lumbar support. The locking back angle adjustment lever changes the angle of your torso to reduce disc pressure. The waterfall front seat edge removes pressure from the lower legs and improves circulation. The pneumatic adjustment lever will allow you to easily adjust the seat to your desired height. The adjustable armrests take the pressure off the shoulders and the neck. The heavy duty metal base is constructed to keep up with the demands of an intensive use chair.