Lissoni Outdoor Collection is a furniture series designed by Piero Lissoni and produced by Knoll. The series includes an armchair, a two-seater sofa, a three-seater sofa, and a number of coffee tables. Frame made of extruded aluminum available in three finishes. The Italian designer joined forces with the American company to create a collection intended for outdoor spaces, which fully reflects Lissoni's idea of essentiality and elegance, distinctive traits of his style. The structure of the stool is made of molded high-density rigid polyurethane, painted in white, black, or dark red. The feet are made of black thermoplastic material. Whereas, the cushion is made of flexible polyurethane, covered in black technical fabric with a non-removable cover.