Trestle Tracks has the Official STEAM Stamp of Approval from the Toy Association, and it's great fun to build again and again and watch marbles roll down again and again. 43 piece starter set includes 1 catcher, 1 topper, 30 risers, 5 stainless steel marbles, 6 unique tracks. Made in China. Recommended for ages 8 and up. Not for children under 3.