The Artcobell D300 Series Cantilever Chair is an exciting addition to the classroom, offering a sleek, stylish option at a great value. A+ sized shell offers 30% more surface area than the industry standard A size. Shell is one-piece, injection-molded polypropylene with anti-static additive. Enhanced waterfall front edge and biometric design allows comfortable seating. Fifteen integrated wrap around ribs are provided for shell strength along with nesting scallops on both sides of shell that allow shell to nest and eliminate movement when stacked. Both sides of shell are textured and constructed with a handle in the upper portion of the shell with smooth edges for ease when carrying. Frame is constructed of tubular steel welded to two steel support braces with a continuous weld on all four connection points. Toe glides on cantilever legs provide support on the ends of the frame tubes and include an adjustable nylon button glide for leveling on uneven surfaces. Two fixed anti-tipping heels with nylon glides support the rear of the unit, preventing shell from touching vertical surfaces.