Ergonomic Design with Backrest & Armrests: The wide, thickly padded cushion and curved backrest are filled with high-density foam, conforming to your body's natural curves and providing optimal lumbar support. The built-in low armrests offer extra comfort, helping you easily get in and out of the chair. The tufted design not only enhances visual appeal but also reinforces the sponge's shape, ensuring it won't deform over time.