Known for its luxurious men’s clothing and accessories, Zilli has developed its first collection of skiwear and skis this winter. The company enlisted the French companies Degré 7 for the skiwear and Lacroix for the skis. The new products combine performance materials and the latest technology with Zilli’s design elements. The stylish black bi-stretch Gore-Tex ski jacket ($17,200) has matte crocodile shoulders and a chinchilla-and-cashmere-blend collar; the pants ($5,400) are made in Schoeller technical fabric…