The Spectrum Industries 38275 Stack 5.0 modern stackable chair is a plastic chair that features a contoured polypropylene 20" wide seat and comfortable backrest which will please those with even the broadest shoulders. It comes with strong, welded, 15-gauge, 2/3" diameter steel legs with protective black non-marking floor glides and a durable frame design passed testing for 250 lbs capacity. It is capable of floor stacking up to 5 chairs and can Stack and transport up to 12 chairs on the dolly. You can add this in a gradually tapered seat and it is easy to see why this chair is a smart and economical choice for learning centers, corporate training centers or conference and seminar applications.