Three fun ways to stack, what's better than one stacking toy how about 3 in 1. The imaginarium stack and play trio includes a 20 piece classic stacker in vibrant colors and 3 different shapes they can mix and match to create unique, colorful stacks, looking for a little challenge. The 7 piece stacker puzzle is the perfect way to combine fine motor skill development with problem solving in their play. Sort 3 different shapes in the correct order to complete the puzzle. The wheeled train engine connects to two train cabins with 3 posts each they can use to stack a variety of colorful blocks in different shapes any way they choose and then chug along. All aboard.