Chair with steel sled frame and connector system. Polypropylene seat and backrestUni - Polypropylene seat available in ten different colours with an extensive range of steel, wood and aluminium frames. UNI stands out for its effective padded-look texture on the front and shiny finish on the back. The last project by Francesco Geraci, Uni has become an icon with the same elegance of its designer. Polypropylene seat available in ten different colours with an extensive range of steel, wood and aluminium frames. UNI stands out for its effective padded-look texture on the front and shiny fi nish on the back.