Gonge Bouncing River Stepping Stone - Motor Skills Activity For Toddlers And Kids. Non-Slip Rubber Edges For Safe Active Play WiProduct DescriptionThis adaptation of River Stone features a soft base and a hard top platform supported by three strong steel springs to enable bouncing, which requires adjustment through the child's ankles and legs, making it a more challenging activity than simply stepping. Bouncing River Stone can be used on its own for special motor training activities, or together with River Stones to provide even more play possibilities. From the