Wide range of executive and operator chairs for office and home office use. Sitting at your desk for long hours? Make sure you choose one of our ergonomic chairs suitable for eight hours of use. We have heavy use chairs available certified for 24 hour use. If you need to make sure that the chair you pick is safe for larger users, in each chairs product description you will find information on the chairs sizes and maximum user weight. Some of our office chairs are rated to 27 stone.