Teknik Office Ergo Plus Ergonomic Executive Operator Office Chair With Headrest and Apex Adjustable Arms and Ultra Base Blue - Certified For 24 Hour Use - 9700BLU/R520/0290 DDThe Teknik Office Ergo Plus Headrest Blue 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 more hardier contract chair for call centres, operation hubs and a variety of other office environments. It's available in Blue or Black padded fabric and has Apex adjustable arms. Other features include an anti shock function, 2: 1 back and seat syncron (5 position), 4