This set of 8 uniquely designed rings offers a host of early exploration & motor development. Stack the rings in any size or color sequence. Feel & count the different embossed shapes on each ring. Identify & mimic the 8 different die cut facial expressions on the center posts for bonus social-emotional learning. To progress the learning fun with advanced motor coordination, connect any 2 rings back-to-back & spin either side like a top on a smooth surface. Many combinations of rings to connect & spin. Stacked set of rings is 5.1” (13cm) high.