When he's discovered by his mother and father

and hand-eye coordination

When one piece is left standing - YOU WIN

With interesting imagery and strategic piece size

Stacking Cups regions When he's discovered by hisStack and tumble play meets fun in the tub with Bigjigs' 2 in 1 Silicone Stacking Cups! The set comes with seven colorful cups, each with patterned holes on the base, so water can flow through them like a waterfall. These stacking toys are also great for sensory sand activities, whether on the beach or in your garden, and you won't have to worry about the mess as they're very easy to clean. Learning to build, nest, balance and pour are all excellent