Eero Aarnio, the celebrated Finnish designer known for his pioneering approach to furniture design, partnered with UPO Furniture in Nastola, Finland, during the 1970s to create a distinctive line of chairs. These pieces showcase Aarnio’s signature modernist aesthetic—clean lines, bold shapes, and a focus on both form and function. Made from molded fiberglass-reinforced polyester, the chairs reflect the era’s embrace of innovative materials and minimalist design. Today, they are considered iconic collector’s items, appreciated for their striking style and cultural relevance within mid-century modern design.