MATERIAL: foam balls are made of high-density Foam, light in weight, smooth surface, easy to paint; natural bamboo sticks are made of materials, smooth surface without burrsEASY TO MAKE: Our solar system projects are very easy to use. Grab your craft supplies, pens, , and design each planet. Use bamboo sticks to position planets around the sun and you're done with your projectEXPAND YOUR KNOWLEDGE: This solar system kit is great as space week homework to learn about planets, galaxies, or anything related to astronomy, school solar system projects and a of craft activitiesPACKAGE: The solar system project kit no decoration materials, ideal for educational math and science demonstration modelsMaterial: Foamcolour: WhitePackage Contents:14 x foam balls (they are blank, the first picture is the effect)10 x bamboo sticksOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.