Key Features:•Medium back chair with ergonomic design•Without arms•Gas lift height adjustment, ratchet back height adjustment and back tilt•Tailor to the user's needs for comfort during long periods of sitting•Improves posture, reduces strain and pain, and increases comfortThis medium back operator chair is a great value option for desk work in the office or at home. With the addition of gas lift height adjustment, ratchet back adjustment and back tilt, every user can tailor the chair to their needs for comfortable and safe sitting all day long.AdjustmentsThe gas lift height adjustment is easily operated when seated using a pedal on the side of the chair. This allows the user to work in the optimal position based on their height and the height of their desk, in turn preventing hunching and reducing strain on the neck and lower back.Also reducing strain is the back tilt, which can be set to a comfortable leaning or upright position based on personal preference. This is operated by the second pedal on the side of the chair, so adjustments can be easily made whilst seated throughout the day.Without arms, this chair provides greater space and freedom of movement for those switching between tasks. Choose this chair in workspaces where the user will undertake writing, filing, telephone work, and other tasks where arm support is not necessary.Comfortable, Ergonomic ShapeThe chair also features a ratchet back, allowing the back pad to be lifted up or down in isolation to suit the height of the user. This ensures the ergonomic shape aligns correctly with the curve of the spine, in turn providing comfort and lumbar support that prevents lower back pain and promotes good posture. The back is medium sized to enable better tailoring where taller chairs would force the head of shorter users forward.The seat pad is designed with a waterfall shape, made specifically for long periods of office use. The ergonomic shape positions the legs to improve circulation when sitting for a long time, preventing dead legs and lessening the long-term effects of a sedentary lifestyle.High QualityWith a 5-star nylon castor base, stability and manoeuvrability is provided from all angles for safe and efficient working at all times - whether gliding seated across the room or wheeling the chair to another part of the building!Both the back and seat are deep padded and covered with high quality fabric in a variety of professional shades. These will not only look stunning, but feel comfortable to sink in to day after day – and even year after year. In fact, each chair comes with a 3 year guarantee to help you save money in the long run.Dimensions:•Height: 450 – 580mm•Width: 470mm•Depth: 450mmWeight limit: 115kg (18.1 stone). Conforms to the following standards: BS 5852 : Part 2 & ISO 17050-1.