This pair of armchairs, model Tub-Kit, was designed by João Américo Pinto de Oliveira for Altamira and Plimat - Marinha Grande, in Portugal in 1984. It is a unique design were the structure in made of plastic tubes. The seat and back is a continuous soft cushion, upholstered in the original red fabric, that can be removed to wash. They are in original and good condition, with the stamp of manufacture in different parts of the armchairs.