The COOLJOYA Magnetic Blocks set includes 150 pieces of magnetic building blocks designed for boys aged 3 and above. These construction toys are perfect for young builders interested in exploring their creativity and developing their problem-solving skills. With a construction and STEM theme, these magnetic blocks allow children to create imaginative structures and designs, making playtime both educational and fun. Perfect for little hands to build and experiment with, this set is sure to provide hours of entertainment and learning opportunities.