Vtech Stack And Sing RingsProduct Descriptionstack The Rings For A Musical Surprise With The Stack & Sing Rings By Vtech. As Your Child Builds Motor Skills By Stacking The Colorful Rings, The Interactive Monkey Will Light Up And Play Melodies And Sing Along Songs. The Monkey Also Encourages Your Child To Stack The Rings With Fun Phrases That Introduce Colors, Shapes And Numbers. Brand Storyby Vtech