Ron Arad, 1999 Tom Vac's equally elegant and comfortable plastic seat shell offers a high degree of comfort both indoors and outdoors. Special additives to the plastic shell prevent it from bleaching in the sun and a powder coated base means that it is also suitable for use on a patio or in the garden. As it can be stacked, it is also useful in situations where a number of chairs are required. Materials: seat shell in polypropylene, dyed through.