Birch wood (Betula pendula) – clean Scandinavian beauty. The unadorned surface exudes peace, while the hard birch wood core is ready to be challenged, indoors or out. One of the Finnish national symbols: the silver birch (Betula pendula) is the national tree of Finland. Now also available in gray oil for outdoor use. Please note that cushions are sold separately. EcoChairs are shipped unassembled in flat packs. Comfortable Foldable