The Teknik Office Ergo Comfort Black PU chair is our versatile multi-adjustable black wipe clean executive operator chair : perfect for all environments and users. It has 4 multi-adjustments - seat tilt : seat slide : back tilt and gas lift seat height adjustment for excellent user support and comfort. Certified for 24 hour use (BS5459-2: 2000) and with 150 kg rated gas lift : its an ideal and affordable solution for all types of work and home environments. This chair also accepts height adjustable comfort armrests (sold separately) : has a sturdy nylon base and is also available in Blue or Black Fabric as well as the wipe clean PU version.