Opus's stackable outdoor furniture set design provides high function - without sacrificing high style. And of course, because this sling patio furniture set uses stackable chairs, they can be moved out of the way when a large gathering turns into a smaller conversation. Opus's flowing, contemporary lines celebrate simplicity and purity of form translated into stylish, yet practical outdoor furniture. This combination of artistry and elegance, designed by John Caldwell, is a natural addition to any outdoor environment. In addition to Opus stacking chairs, bar stools, dining chairs, sling chairs and chaise lounges, Tropitone offers coordinating outdoor dining tables, and accessory tables designed to complement all Opus sling patio furniture sets.