Easy to move with locking casters. All legs are adjustable to suit children›s height. The tub can be lifted right out for easy cleaning and the lid fits snuggly and easily on top of the tub. The lid can be used as a writing or a drawing surface when filled with sand or a storage shelf when placed underneath the tub on the rack. The water flow can be controlled by the drainage plug. For fastest drainage, take the plug off. ? Stimulates children›s sense of touch and calms them down. ? Help children learn different characteristics of sand and water. ? Promote sharing and interaction among children. ? Allow children to discover the joys of creativity and performance oriented games.