Kids will spend hours exploring and learning with the ChildBrite Youth Mobile Mite. The resin activity center is lightweight, resists moisture and stands up to daily wear and tear. Use it inside or outdoors. Each table includes two snap-on caddies, white lid and a four-inch deep Mega-Tray. Four locking casters make the tables easy to move. Choose a center with a clear nine-inch-deep tub with drain plug or one with a Mega-Tray. The Mega-Tray does not have drain plugs but are easy to remove and empty.