There is no better way to be involved with game or concentrate on working than in the mid-back office chair, which features ergonomic design and sturdy structure. Covered with faux leather and filled with elastic sponge, the chair provides ultimate comfort and prolonged lifespan. Lumbar support with massage function will take away stress of sitting for long time. Height adjustable seat will satisfy your different demands and caters to people of different height. If you are tired with tedious work or game, the rocking function will be a surprise. If you want to move around to have a chat with your colleagues or take some game devices in other places, the smooth rolling casters will be a perfect solution. If you want to add a functional chair to home office, the mid-century home office chair will be a good choice.FeatureMassage waist cushion relieves your muscle stiffness Easy height adjustment via lever under the seat meets different needs Rocking function brings much more fun Metal base equipped with 5 smooth rolling casters for free movement Swivel seat helps you stay mobile to grab what you want or take a relaxing rest Mid-Back backrest and enclosed armrest relax your body Durable faux leather upholstery and elastic sponge provide superior comfort Both sturdy construction and premium pneumatic cylinder ensure reliable daily usage Perfect for living room, game room and officeSpecificationColor: As the picture shows Material: PVC, PU, Sponge, Wood, Iron Overall Dimension: 23.5''X23.5''X31.5''-35''(LXWXH) Seat Size: 20.5''X17.5''(WXD) Back Size: 16''X14''(WXH) Net Weight: 25 lbs Weight Capacity: 265 lbs Package Includes: 1 X Massage office Chair 1 X Instruction