Description Key Features Ergonomic Backrest for Pressure Relief: The design of the task chair's backrest conforms to ergonomics and aesthetics, with beautiful curved shape to wrap your body and fit your spine curvature. Thus, the computer desk chair can get you seated in healthy posture and provide comfortable support to relieve back pain. Upholstered Seat for Maximum Comfort: The ergonomic computer desk chair is fitted with a comfortable seat cushion, which is covered with waterproof & skin-friendly PU leather for a fine touch. Besides, the high-density sponge filling is soft and resilient, being able to alleviate the stiffness due to longtime seating. 4" Height Adjustment & 360° Swivel: The rolling desk chair features a high-quality gas lift cylinder for stable & smooth height adjustment. You can adjust the seat height from 16.5" to 20.5", thus to customize an ideal seating position. Besides, the conference chair can rotate by 360 degrees, making it flexible and convenient to talk to others face to face. Sturdy Galvanized 5 Claw Base with PU Casters: The armless office chair is supported by a heavy-duty 5-claw galvanized base, which ensures a large weight capacity up to 330 lbs. In addition, the stable base is equipped with 5 upgraded PU casters, allowing you to move to anywhere smoothly and quietly. Easy Assembly & Simple Maintenance: The assembly of the swivel task chair is quite easy. No complicated tools are required. Just follow the 4 steps in the illustrated instruction to get is finished. What's more, the PP seat and PU leather cushion is resistant to stains, which means you keep it clean with the minimal effort. Specifications Color: White/Black Material: PP, PU, sponge, metal Overall dimensions: 22.5" x 21" x 27.5"-31.5" Seat dimensions: 18" x 16.5" (W x Depth) Adjustable seat height: 16.5"-20.5" Base diameter: 21" Weight limit: 330 lbs Net weight: 26 lbs Package Includes: 1 x Set of 2 Adjustable Office Chair Swivel Desk Chair with PU Leather Seat