Refers to the study of collections starting from the selection of the materials posted, the type to the fabric color to the selection of internal and external components of the product. With a help of industry experts who can indirrizzare customers to follow future market trends. The study of a collection is divided into several steps. In the first step is established with the customer a line that can meet and exceed the needs of the market reference and target customers to whom the customer contacts. The second step relates to the search and selection of materials. One of the most important steps in the chain of realization of a collection. The third step implementation of components and accessories to customize the products. This process involves the search and selection of suppliers that can meet the standards of quality, design and price. The phase following the selection of materials do is to create real models.