Watery habitats filled with swirling waves, beautiful shells and fascinating corals will immerse children into imaginary underwater worlds that will inspire play, promote creativity and enhance language development. Each sensory stone is engraved on one side and smooth on the other to encourage open-ended small world play.Details:6 assorted ocean colors and designs6.3" x 4.33" packaging size1.75" x 2" approximate maximum size18 stonesEasy to set up and pack awayMade from stoneSuitable for ages 2 and up