With a hanging frame, it is easy to hang. You only need a nail. It is convenient to store and can be put in a school bag or taken out at any time. High-quality design, printed on thick canvas, waterproof and tear-resistant. Perfect for chemistry professionals, teachers, parents, students and children's bedrooms Easy to understand, and it is displayed in two ways, text and icons, to deepen the impression when learning. SIZE:16x25inch