The HERCULES Series 880 lb. Capacity Ergonomic Shell Stack Chair offers comfortable occasional seating. This sturdy chair makes a great addition to the office, use it everywhere from the conference room to the waiting room.From the classroom to the office, the HERCULES Series 880 lb. Capacity Ergonomic Shell Stack Chair provides durable seating where it's needed most. Able to be stacked 20 high, this stacking side chair can easily be stored when not in use. Especially designed to be ergonomic, this office chair has a specially molded body with a comfort formed back and contoured seat with waterfall front. The shell is made of high impact plastic with a durable heavy gauge steel frame. Each chair can hold up to 880 lbs.