The Alder Biodegradable Stool from Mater is made from biodegradable Matek™, a breakthrough in sustainable design. After extensive testing, Mater developed this material to decompose naturally over time. Designed by Patricia Urquiola, this stool includes oval and square lounge tables in two elegant shades, offering versatile style for indoor and outdoor spaces. Combining modern aesthetics with eco-conscious craftsmanship, the Alder Stool is committed to responsible design without sacrificing durability or beauty.