SIMPLICITY: Stack the blocks together or use them individually in imaginative open-ended play as bridges, tunnels, houses, caves, and much more! HIGH-QUALITY SOLID WOOD: All natural and child safe. Smooth surfaces will not splinter, crack, or chip. BEAUTIFUL DECOR: Stylish and practical. Compact storage with a nesting design means they’re easy to away when playtime is over. The quirky shapes and warm colors make for charming decor. EARLY SKILL DEVELOPMENT: These nesting rainbow stacking blocks will help your child develop fine motor skills while they learn how to name colors, match shapes, and use their imagination.