A mixture of friendliness and firmness to spark the interest of any type of customer. With its rounded edges and simplistic color scheme, the Knoll Spark Stacking Side Chair is an unpretentious, useful and aesthetically pleasing side chair that can look at home in a variety of environments. The frame is made of Glass reinforced Polypropylene, molded to provide lightness and comfort, as well as to keep the cleaning process easy. Moving them is easy due to their light weight, and they can also stack up to 6 units high (10 with the Spark Dolly) so they don’t take up too much space.