Specifications:Material: coated paperFeatures:1. Our alphabet flash cards are made of thickened cardboard and laminated, waterproof and will not fade. There are also three erasable pens for easy writing, modification and erasing, which can be used for long-term use.2. The alphabet flash cards use double-sided printing technology, one side is for letter recognition, and the other side is for memorizing and spelling words with patterns. They are equipped with metal rings for easy carrying and storage.3. Word flash cards are useful tools for teachers and parents. They can help students with basic letter recognition and memorization, help promote their interest in learning, and can also be given to parents or teachers.