1Write On Game: The blank dices are suitable for writing on. The blank sides can be drew and writen images, numbers, symbols, etc., according to your teaching demand. 2Compact and Portable: The dices are 16mm in size. The compact and small size make them convenient for you to carry. You can put them in your pocket or bag. 3Durable and Long Lasting: The dices are waterproof and antioxidant. They are very durable and can be used for a long time. They are suitable for various interactive games and teaching. 4Plastic Material: Made of premium plastic, the write on dices are odorless, light in weight and resistant to wear and tear. It has a long service life. 5Wide Application: Blank dice set is suitable for classroom accessories, home teaching and math learning, it can also be applied to parties or playing with friends at home or at school with classmates indoors.