Learn about the history and the development of space programs and vehicles around the world. Learn about how astronauts survive in such extreme environments and more about gravity on the back side. MADE IN USA Safety-Approved Award Winning Anti-bacterial - Wash with dish soap; placemats dry quickly Use dry erase or washable markers. Kids can also wipe clean with paper towel or eraser. A spray bottle is fun too! Used in homes, schools and on the go,travelling or in a restaurant. Age Recommendation: 5 -100 Lightweight and durable. Dimensions: 17.5" x 11.5"