Kids will love the wild shape of the Zigzag Recirculating Water Trough as water flows back and forth as it cascades through each section. The series of dams in each section also affect the flow, causing some fun variance. Preschool aged children love tactile play activities like this, and will delight in watching bath and pool toys float down the river. The current is created by the hand pump, which draws the water from a reservoir at the end of the river. This means that no running water needs to be attached to it, and no water is wasted.