Teknik Office Ergo Plus Ergonomic Executive Operator Office Chair With Headrest and Premier Base Black - Certified For 24 Hour Use - 9700BLK/R530 DDThe Teknik Office Ergo Plus Headrest Black Fabric Executive Operator chair is one tough cookie. Certified for 24 hour use (BS 5459 2: 2000) and rated up to 24 stone, you won't get a hardier contract chair for call centres, operation hubs and a variety of other office environments. It's available in Blue, Black or PU Black padded fabric and has optional extras such as arms (fixed or height adjustable) or different forms of five star base (premier