This product is an early childhood education card, which is made of safe and gentle cardboard materials, so your children can use it with confidence. The creative design and small size make it easy for your children to use it for learning at any time. Learning cards will provide your children with a simpler and more interesting way of learning and effectively improve their cognitive abilities. Features -Color: white -Material: cardboard -Size: 8.00X8.00X0.10cm/3.14X3.14X0.04in -Note: the set contains 101 sheets of cards (0-100) -It is made of cardboard material, which is gentle and environmentally friendly, and safe to use. -Creative cartoon appearance design and bright colors can better win the love of children. -Number learning cards can effectively help you improve your child& 39;s cognitive ability. -It can help your child observe, learn and remember better. -This is a very creative and practical children& 39;s learning cards, and it will be your good choice for children& 39;s gifts.