Rolly Toys Dump Trailer 2 Axles Green Dump Trailer With Dump Truck On 3 Sides, It Is Stable. It has solid wheels, so the toddler will be able to transport many things in it. Fits any Rolly Toys vehicle except the rollyKids and rollyDumperKid models Fits any Rolly Toys vehicle Rolly Toys is a German company founded in 1938 by Franz and Rosa Schneider. Today, after more than 75 years, the family business is still run by the second and third generations with no less commitment. Since its inception, Rolly Toys' goal has been to bring joy to children and parents around the world through the highest quality children's toys.