Boikido Eco-Friendly Wooden 5 Pyramid Cubes The Boikido Eco-Friendly Wooden Pyramid Cubes is a set of whimsical stacking blocks that can be stacked to almost 19" high Lightweight and hollow, these blocks can be nested These blocks have animals, vegetables and numbers on their sides, making them a perfect learning tool Get a head start on education, these blocks help with basic counting skills, sorting and motor skills Contains 5 cubes | Recommended for ages 18 months and up