Padded Lab Stools by National Public Seating are perfect for classroom and studio use. They feature a steel tubing frame, footring welded with 4 contact points on each leg and an adjustable backrest. The adjustable backrest can be raised up or down or moved front and back. The adjustable height models have chrome plated inserts and tilt swivel glides on legs. These heavy-duty steel stools epitomize ergonomic design and elegant style. Made of 7/8" O.D., 18-gauge steel tubing in 3 fixed and 3 adjustable sizes. 14" diameter seat with an 11 1/2" diameter, 1/2" thick vinyl pad riveted thru the steel pan seat. Features a 5/8" O.D. foot ring welded to each leg at 4 contact points for added rigidity. The optional vinyl-padded backrest is 6" high and 12" wide and adjusts up/down and forward/backward. Metallic Grey powder coated frame with Grey vinyl padding.