About this item [ ] POWERSTONE big and tall office chair is made for heavier folks who need strong support. It has a tough 4-stage support bar that can handle up to 400 lbs and a solid metal base that supports up to 800 lbs, making it really sturdy and durable. [ ] POWERSTONE heavy duty office chair cushion is 4.35 inches thick and features spring packs along with soft, flexible sponge, ensuring a super comfy seat. It's good for anyone who spends a lot of time sitting, providing good comfort throughout the day. [ ] Lumbar support of POWERSTONE 400lb office chair can be adjusted up and down by 2 inches to provide relaxation for the lumbar in different positions. Armrests of the office chair 400 lb weight capacity can be adjusted up and down by 1.5 inches to accommodate various working postures. [ ] POWERSTONE plus size office chair features a backrest made of highly breathable mesh, complemented by a cushion wrapped in the same breathable material. Designed for users up to 400lbs, this