League Stacking Student Chair adds color to your classroom and offers color-coding opportunities for learning stations and more. Four-leg base features the strength of heavy-gauge tubular steel with a chrome finish. One-piece, molded polypropylene shell offers the classic classroom look. Flex back of this ergonomic seating supports healthy movement at school or in the workplace. Contoured ribs dynamically tuned allow the upper back to flex more easily than the lower sections for lasting comfort and support. Smooth shell and a comfortably contoured waterfall seat front allow easy cleaning. Seat height is 18" and is typically designed for students in fifth-grade and up. Chairs stack 5 high for convenient storage.