This paper describes a successful development of a new accessory rain protection for vans for which the principles of Dynamic Product Development (DPD) was used. The development was done and documented during 10 weeks. The result of the project is a prototype model for Opel Combo that unfolds automatically when the doors are opened (see figure 1). The work resulted in a Unigraphic model that makes it possible to easily make rain protections for other types of vans. What characterizes the new rain protection is that it is easy to mount, easy to use, possible to open doors 180° and that it takes a limited space when folded. Due to the materials recommended, it is environmental friendly.