Steel tube frames provide long-lasting strength; available in 4 seat heightsChair features a steel frame with a tough vinyl shell. Curved backs encourage good posture while waterfall seat edge relieves pressure points. Openings in back provide ventilation and a hand-hold for easy portability. Self-leveling, rubber cushioned glides protect floors. Available in 4 sizes to fit grades K-12 and adults. Chrome frame with your choice between 5 seat colors: -01 black, -134 dark green, -18 red, -53 burgundy, -55 navy To view color choices, simply click on View Swatches located above. Overall dimensions: Seats: 19W x 21"D Seat heights: SS2005: 17 1/2"HSS2006: 15 1/2"H SS2007: 13 1/2"H SS2008: 11 1/2"H