450LBS Capacity - Blue Whale big and tall office chair has a thickened steel tray mechanism, a strengthened metal star base and silent PU wheels, which has excellent durability and bearing capacity. 450LB home computer chair is suitable for most office or game needs. High quality nylon frame, pure texture, strong and durable.Overall Upgrade Size - Our upgraded office chairs are equipped with super large seat cushions (21D "X 19.5W", 5.1 "thick), tall backrests (42.1" maximum) and heavy metal bases, which are designed for tall people and can support 450 pounds. It is an excellent gift choice for yourself or the people you care about.Ergonomic and Adjustable - S-shaped backrest is equipped with an effectively adjustable lumbar support, which can switch to a comfortable sitting position at any time. Manually adjust the support plate, up and down, front and back, to meet our requirements for the office environment. In particular, the enlarged 1D armrest allows you to relax your arms at any time. The boring work also needs to be adjusted.Super Thick Cushion - This heavy duty office chair uses 21" wide and 5.1" thick widened and thickened memory foam cushion, specifically adjusting the hardness to match the demanding office scene. Even if we work for a long time, we can protect and support our hip and lumbar health at any time. Wrapped with high-quality cotton and linen fabric, it is skin friendly, breathable and fast drying, and durable.Reliable After-sales Support - For any quality problem, Blue Whale provides a 30 day money back guarantee and replaces damaged or defective parts free of charge within 12 months. In addition, we promise to provide lifelong service support for each customer. If you have any questions, the Blue Whale service team is always at your service. Product Description