Teknik Office Ergo Plus Ergonomic Executive Operator PU Office Chair With Headrest and Comfort Adjustable Arms Black - Certified For 24 Hour Use - 9700PU/R510/0270 DDThe Teknik Office Ergo Plus Headrest Black Leather Look 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 a PU Leather look chair so has the added feature of being wipe clean, it is supplied with Comfort adjustable arms. Other features include an anti shock function,