This Tower of Fun Stacking Cup collection was designed by Nothing But Fun Toys with a fun, modern spin on a classic play pattern. Stacking and nesting cups are popular for a reason and this new version has been enhanced with several features making it the best in the marketplace! Each of the 10 stacking cups and the topper are a different bright color, they are each individually numbered with cute shapes to learn. They all have unique stamps on the lid and small holes to add to their versatility - they are now bath toys and sand or beach toys as well. The cups were made specifically for children and contain no sharp edges. These stacking cups are made of high quality, durable, non-toxic, BPA free plastic to ensure your child's safety.