Steel tube frames provide long-lasting strength; available in 6 seat heightsChair features a steel frame with a tough polypropylene 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 6 sizes to fit a range of ages. Painted frames with matching seats available in 5 colors: 17 purple, 18 red, 25 yellow, 55 navy, 250 persian blue To view choices, simply click on View Swatches located above. Once item is placed in cart, you will be prompted to specify your color choice.Overall dimensions: Seats: 19W x 21"D Seat heights: SS2000: 17 1/2"HSS2001: 15 1/2"H SS2002: 13 1/2"H SS2003: 11 1/2"H SS2004: 9 1/2"H SS2012: 7 1/2"H