A Set Of Five Rainbowcolored Teething Rings And A Coneshaped Base That Literally Rocks! What Baby Wouldn'T Giggle With Glee At The Sight Of Eye Candy That He Can Actually Bite Into? Stack Them Up, Topple Them Down And Stack Them Up Again In Any Way And Every Way You Can. Turn Play Time Into Learning Time Without Taking Out The Fun With The Rock N Stack By Playgro! • Brightly Coloured Rings Stimulate Visual Perception. • Textured Surfaces For Tactile Development. • Helps To Build Babys Fine Motor Skills And Develop Cognitive Problem Solving Skills. • Stack The Rings Or Knock Them Over An Essential For Fun And Learning.