EXTRA LARGE AND COMFORTABLE HEAVYWEIGHT CHAIR - This home office chair has a wider and thicker seat cushion, better suited for taller people, and can hold up to 500 pounds. The extra large seat cushion (seat cushion size: 22D" X 26.77W", 4.33" thick) will bring you a more comfortable experience; ADJUSTABLE LUMBAR SUPPORT - This heavy duty office chair is designed with adjustable lumbar support to control the lumbar vertebrae forward and backward, effectively relieving pressure on the lumbar spine area; COMFORTABLE AND BREATHABLE MATERIALS - The surface of the big and tall office chair is designed with high-quality mesh fabric, which is breathable; the thickened sponge sits with high resilience and softness like foam, and the cushion adopts a waterfall front seat edge design, which eliminates pressure on the calves and promotes blood circulation; MULTIFUNCTIONAL ADJUSTABLE - This computer desk chair features flexible 4D armrests made of metal to provide comfortable