Dereck set was projected with idea of containing many functions on a relatively small area. The device is composed of an angular climbing wall, which develops movable skills, shop making easier striking up an acquaintance with other children in a common advertisement, stairs, covered tower and a slide. It is an unique union of interesting colours with high quality of used materials The set construction is made of pinewood, pasted in a multilayer way, painted in nut-brown colour. Refills are the plastic HDPE of high quality.