Modular and versatile, thanks to the variety of elements and configurations available, the Mex-Hi system consists of five different sized bases on which the independent cushions - armrests, backrests and seats - are fastened to create corners, in-line or island compositions. Thanks to the study carried out by Cassina LAB, a collaboration between the Cassina Research and Development Centre and Poli.design at the Milan Polytechnic, the sofa is made with innovative materials in order to make it comfortable and more sensitive to the environment. A 100% recycled fiber, deriving from PET mainly recovered from the sea, has been introduced into the cushion padding. The frame is in tubular steel with elastic belts; the upholstery is removable. A freestanding side table and a pouf/table complete the collection.