Since the year of its foundation, 1935, Sealup has been synonymous with quality and a passion for luxury garments.Over the years, the change, the transition from one generation to the next, has had a fixed point of reference: "excellence". A must that embodies Milanese concreteness and Italian taste. Because Sealup is 100% Italian, not only through its founders but also in its production, which has always remained here, in the hands of its Italian work force. In the beginning there were only raincoats, then, starting in the 1950s, the product range was broadened. Those were the years of the success of prêt a porter. Sealup garments travelled worldwide, until even First Lady Jacqueline Kennedy, in a photo dated many years ago, appears sporting a Sealup waterproof raincoat. In the late 50s and early 60s Sealup was one of the most important garment manufacturer in Italy

It was one of the founding partners of the trade association, “Associazione Italiana Industriali dell'Abbigliamento”, and in 1959 it fostered an outstanding project: the creation of the Italian Fashion Manufacturers' Committee (Comitato Moda degli Industriali dell'Abbigliamento). Also the architecture of the historic facility in Via Gallarate, designed by the famous architect Renato Bazzoni, made Sealup an advanced model factory: the roof was designed to shed natural light uniformly over the benches of the workers; it contained an internal canteen, the offices were furnished with typical Italian designer items and, in the administrative department, the "punched card center", a forerunner of the computer was the first to be installed in Italy in a garment factory. In the 90s, it was decided to refocus production on waterproof garments produced for international luxury brands: Sealup products became the industry benchmark of excellence, because research gave the firm its all-important cutting-edge advantage.