The Louis ghost chair is technologically highly innovative; it is seamless made out of one piece in an injection molding procedure, a very courageous usage of the material polycarbonate. Despite of this tender and transparent appearance, the Louis Ghost chair is extremely stabile and resistant, shock and scratch resistant as well as weather resistant. However, those that prefer to sit a bit more comfortable, have the possibility of getting the felt cushion by Hey Sign. This one that consists of 100% purest wool felt is especially made for the Kartell Louis Ghost - by Hey Sign, they are made of ecologic materials and make up an adapted cushion to sit on. Highly recommended.