Alder (Alnus glutinosa) is a relatively soft and therefore comfortable wood to use also in spas and saunas. Excellent for sunny locations or glazed balconies and patios. Tolerates high temperatures and is therefore the best choice for harsh environments, if you prefer black decor. The black wood oil protects the product well against the weather all year round. Please note that cushions are sold separately. EcoChairs are shipped unassembled in flat packs. Comfortable Stylish Foldable