Product description

"Durable and ergonomic Internal back height adjustment (on P, Y & M mechanism only)
Ballistic nylon back (optional)
Black or brushed aluminum base
Waterfall seat
CAL 133 approved models
300 lb. weight capacity; 350 lbs. on Heavy Duty 24/7 option "

Concept

Knack boasts an uncluttered and traditional design that makes it an essential and affordable choice for corporate, healthcare, government and educational settings. The soft, comfortable back follows the natural curve of the spine, providing great support for hours of sitting. Five control selections and a Heavy Duty 24/7 option make Knack a great all-around task chair. Knack includes a back-height adjustment so every user can enjoy individualized upper-back and lumbar support.