The Answer

The ErgoSeat Pro Mesh Office Chair ($349.99 on sale) is the best office chair under $500 in 2026. It offers adjustability that rivals the Herman Miller Aeron—4D armrests, adjustable lumbar support, and 135-degree recline—at roughly a quarter of the Aeron's price. The full-mesh construction keeps you cool during long work sessions, and the 300 lb weight capacity with aluminum base signals serious build quality. If you're spending 8+ hours a day in a chair, this is the single best investment you can make for your back health without breaking the bank. The 5-year warranty adds confidence that ErgoSeat stands behind their product.