The ZARA Ski Collection features a range of products designed for skiing, including outerwear and accessories. The collection emphasizes features such as windproof and waterproof materials, thermal insulation, and technical fabrics. For example, the technical jumpsuit is described as having waterproof fabric up to a 20000 mm water column and triple-layered construction. The water-repellent and wind protection jacket also highlights its special water- repellent fabric, wind protection, and thermal insulation. Additionally, the thermal t-shirt is made with 29% merino wool to help maintain body heat. While the search results provide details about the products in the collection, they do not explicitly mention specific ingredients or materials used, other than the general descriptions of the technical features and fabrics. Therefore, for specific details about the materials and ingredients used in the ZARA Ski Collection, it would be best to refer to the product labels or contact ZARA directly.