Ingenio Magic Opposites Flash Cards Learn 20 fun opposite word pairs and also learn opposites in English, French and Spanish A fantastic way to teach the concept of opposites through these magically changing cards Layers and multiple images are laminated beneath a unique lens material which allows the child to experience the changing images and 3D effects Reclosable ring keeps all 20 cards together for on-the-go fun Plastic lenticular cards are large (3.5" x 4.0"), very durable and easy to clean