The firm Rex Articoli Tecnici SA was founded in 1935 by Ing. Ignazio Favini. Rex made its start by producing chemical products, and in particular special glues for the shoe industry. In the 1950's the introduction of elastomer based glues saw Rex move into the production of rubber compounds and became specialized in rubber shoe soles.Highly technical compounds developed at SwissStop's in house research laboratory are the foundation of every SwissStop product.Engineers, test riders and industry partners constantly work together designing new products and optimizing current formulas.