These are Froebel-style magnetic blocks purchased overseas. They're a rare type of block not often seen in Japan. You can create various patterns with them, making them a great educational tool for developing a mathematical sense while playing. They have been used, so please check the last two photos for the condition. *The original box is only available for the number 3 set. Colors: Blue / Natural Wood Material: Wood Type: Educational blocks Storage: Wooden box with dividers Thank you for looking.