The fortified construction and soft comfort of the black 6400 Series heavy-duty padded stools with backrests are ideal for hands-on educational settings like art rooms, science labs, home economics, or shop classrooms. This reliable stool features a sturdy frame of 18-gauge tubing securely welded. Riveted through the pan is 5-inch -thick cushioning that will provide years of dependable use. The footrest ring is securely bonded to each leg with four-spot good contact points. The padded adjustable backrests can be moved two inches up/down and forward/back.