Vida 3D Lumbar Support Swivel Office Chairs Mesh Back Ergonomic Office Chair

PRODUCT DESCRIPTION Vida Lumbar Support Ergonomic Chair Mesh Back Computer Chair Task Chair Swivel Office Chairs Product Design Angle Automatic Adapt System (3A System) Without any operation, Vida Z Mesh Computer Task Chairs backrest angle can be automatically adjusted in 9 degrees to fit people's weight, shape, sitting posture. 1. Seat Paddle Wire Control Seat height & back tilting lock easily adjusted via the wire system on seat, simple and ergonomic experience. 2. Seat Depth can slide forward for relax. (optional) 3. Dynamic 3D Lumbar Support Chair Back Automatic Adapt System can provide human body waist in horizontal support. Independent Foam Lumbar Support can prodive waist support in vertical. 4. 3D Support Headrest Headrest height, angle, forward and backward support. Premium Materials ● Korean SHS Class 4 Gas Lift: highest level in the industry ● Korean High Elastic Breathable Mesh & Moulded Foam Upholstery Seat.  ● PA engineering plastic, better than PP plastic. ● BIFMA standard 340mm Nylon Base & 55mm PA Castors Product Functions Headrest Headrest height, headrest surface rotation, headrest frame forward and backward Back Tilting By the paddle on the right side of seat 3 locks within 18 degrees Back Tilting Tension Rotating the knob under the seat Back Height Adjustable Seat Height By the paddle on the right side of seat Seat Depth W/O Optional Arms Arms height adjustment. (3D and 4D Arms are optional) Lumbar Support Arms height adjustment Outstanding Features Angle Automatic Adapt System Without any operation, the chair back angle can be automatically adjusted in 9 degrees to fit people's weight, shape, sitting posture Product Specifications N.W.: 17.9KGS G.W.: 21.9KGS Product Size (based on SHS100mm gas lift) L68.5*W60*H97.5~111.7cm (without headrest) L68.5*W60*H110~124.2cm (with headrest) Packing Size: 70*33*66cm (1PC/CTN) Volume: 0.152CBM Loading Capacity 1x20GP: 189PCS 1x40HQ: 473PCS