Seating Chairs by Mayline Supports up to 300 lbs. Seat cushion features memory foam. Multi-function chair control allows the seat and back angle to be independently adjusted. Chair seat tilts both forward and rearward with tilt tension adjustment. Optional T-shaped arms are height adjustable and have comfortable impact resistant urethane arm rests. Sculpted back has pronounced lumbar support for maximum lower back comfort. Back is height adjustable for precise positioning of the lumbar area.