Astute seating takes the concept of the plastic shell chair and makes it even more comfortable and flexible. Designed to encourage proper posture, the light textured shell holds students in place and the ergonomically designed contour shell comfortably fits the body. These chairs have stood the test of time, holding up to daily use for decades. Chrome frame includes 18-gauge steel tubular legs. Chairs will stack up to 10 high. This chair is 11-1/2" h and weighs 6 Lbs. Ships UPS.