Inner frame in high grade steel and flexible technopolymer backrest insert, everything buried in a urethanic based twin compound. The inner frame grants stiffness and structural strenght, the external film offers pleasure and durability, while the internal material assures softness and comfort. Available in several colours with a satin finishing. The external film is flexible, fire retardant in “Classe 1“ and non toxic. It also offers high resistance to abrasion and spots. Stacking capacity up to 9 pcs on floor, (max 20 on trolley). Accessory: Trolley for stacked chairs transportation. Uno is covered by international patent.