Excellent product. Very good materials. The magnets are strong for children's use, they hold very nicely so they can make their creations. I bought the 3.3 cm measure, and its very apt for small children's hands and there is no choking hazzard. Therefore, they can be also used for children under 3 years old. They have vibrant colors and rounded edges. The noice they make when they stick, is very attractive to children. I liked them very much. Thank you!!!!

Great quality product, as described.