The differential system keeps the sled stable at high speeds in curves, as each ski can rotate at different angles. It features an automatic rope retraction and two seats. The deep claw brake has a suspension for automatic return to the original position. There are no metal parts, screws, or corrosion, and no assembly is required. Everything operates with a click-on mechanism and has a matte and glossy bi-color finish. All products from Plastkon are made from UV-resistant plastics that withstand low temperatures (down to -30 °C) and normal weather conditions. Additionally, no cadmium is used in the coloring of the plastic.