Modest, sturdy and reliable, this ergonomic medium back chair is host to a range of features which allow adjustment to suit the user's preference. A medium height contoured backrest with a 3D curvature incorporates lumbar and spine support. A multi-set synchronous mechanism offers back height, back rake, forward seat tilt and seat slide adjustment. It also provides tension control adjustment to allow for the individual's bodyweight and is lockable in the upright position. A sturdy gaslift offers easy seat height adjustment and a large black nylon base fitted with twin wheel castors completes this impressive piece. This office chair features height-adjustable armrests, depth and height back adjustment, and a body balance system. It has a fabric seat/back covering, is fire retardant, and has lumbar support. The chair has a maximum bearing capacity of 110 kg and is recommended for 8 hours of use per day. Seat dimensions include a depth of 490 mm and a width of 520 mm, with a backrest width of 500 mm and height of 530 mm. The seat height is adjustable from a minimum of 440 mm to a maximum of 540 mm. The chair has a starbase plastic type of feet and 5 castors, requiring self-assembly.