Grimm's Large Complementary Color Star - Wooden Creative Block Puzzle in Storage Tray Large handcrafted puzzle includes 18 identically sized isosceles triangle-shaped chunky blocks Children and adults (from ages 3+) will be inspired to create many pattern arrangements with the vibrantly colored shapes Colors are varying shades of the three primary and three secondary colors, and can be laid out like a color wheel to show complementary color relationships Use the pieces to design interesting, new patterns either inside the frame or on another surface (such as Grimm's Large 17-inch Board with Felt for Games & Designs). Triangle blocks also combine well with other Grimm's blocks for stacking and building structures. Expertly crafted by hand in Germany from sustainably-forested solid European wood, then gently colored using certified safe, non toxic water-based stains