Green-leaning design aficionados will applaud this manufacturer's use of Kira from Interface Textiles, an annually renewable, organically based fiber weave derived from plant sugars. It performs all the same tasks as superstrength polyester with none of the petroleum, and will compost biodegradably when you're done. 855 East Main Avenue, Zeeland, MI 49464; 800-851-1196; hermanmiller.com. circle 412