These are not your average flashcards. They are learning tools that are also toys and teethers. While each silicone disc is a safety certified teether on its own, put a set together and you can teach your child shapes, animals, fruits, numbers, counting and a whole lot more. Each flashcard is made from soft, FDA food-grade silicone to ease teething pain. LEARN: Sorting, Stacking, Motor skills, Sensory play, Coordination, Colors, shapes, animals, objects. With a ring that holds the set of 5 together and attaches to a carrier or play gym, our Teething Flashcards are great in the car, at an appointment or at the park. They are built for fun on-the-go! 3" diameter. Age: 0 months+