This magnetic building set includes eight translucent pieces in standard colors: four pentagons in yellow, blue, purple, and green, and four diamonds in yellow, blue, orange, and red. You can add this expansion set to any Magna-Tiles collection to create a variety of patterns or help children practice recognizing shapes. As they play, kids can learn about different shapes and their unique characteristics. All Magna-Tiles are made with safe, durable materials, including food-grade ABS plastic that is BPA-free and contains no phthalates or latex. The magnets are securely enclosed, and the rivets are made of lead-free stainless steel, making this a safe choice for play. Magna-Tiles also encourage children to explore STEAM subjects through hands-on building, especially when combined with other open-ended toys.