SUGIFT Ergonomic Office Chair with Adjustable Computer Chair with Lumbar Support Swivel, BlackThe B29 series adult ergonomic office chair stands out with its multi-directional adjustable backrest, adaptive lumbar pillow, and stretchy polyester mesh that prevents seat cushion flopping. The generously padded seat with high-density foam provides luxurious seating, relieve thigh pressure and pain.On the other hand, this Ergonomic Office Chair features a breathable mesh fabric backrest with a lower lumbar support panel for improved posture. It includes an adjustable headrest, customizable height adjustment, and ergonomically positioned nylon armrests. The chairs durable nylon base and dual caster wheels ensure easy mobility. With its sleek black fabric and timeless design, it fits seamlessly into any workspace, enhancing its overall aestheticBack Type: High BackMaterial: Fabric Seat/Mesh BackColor: BlackArms: FixedBase Material: NylonAdjustable Height: 42 to 49Product Weight: 37.48 lbs.Weight Capacity: 275 lbs.Product Dimensions: 23.4 in W x 19.6 in D x 42-49 in HHeight adjustable headrest provides additional support to your neck to help relieve tension in your shoulders while you workFabric upholstery with a breathable mesh backPronounced lumbar supportErgonomically positioned 2D armrestsPneumatic gas-lift with lockout featureTension/tilt controls for customized comfortDual caster wheels for easy mobility around the roomOffice chair passed SGS certification