Description They are made of a sturdy cardboard material. Coming up with your idea on how to decorate this puzzle is half the fun. Decorate with crayons, markers, pencils, rubber stamps, paint and much more! You can get to decorating right away! The puzzles come preassembled and stay together until taken apart. They won’t break off while you design it. Features - Color: White. - Material: Paperboard. - The puzzle pieces are made of good-quality material, and they are very practical. - The puzzle pieces are easy to separate and assemble, very convenient for kids. - Helps to train children's hand-eye co-ordination skills, develop creativity and imagination, foster logic thinking, expand knowledge, and more. - Puzzles can be decorated with oil and water-based artist paints, mediums, inks, watercolors, markers, pencils, crayon, and other drawing materials. - These blank puzzles are great for crafting with children or any DIY enthusiast!Package list: 4 sets x blank puzzles