Track Builder offers unlimited experimental building, stunting and boosting challenges with 7 different packs of cool component parts! Kids can create a dynamic route through any build with the versatile Premium Curve Pack. The curves and straight track in this pack have varied lengths of 12-inch and 6-inch and include a Hot Wheels 1:64 scale vehicle. Give them the gift of great ideas! Ideal for ages 6 and older. The Premium Curve Pack is part of the BUILD category and helps kids create unique tracks with premium 90-degree curved track pieces, as well as 12-inch and 6-inch straight track! These premium tracks look awesome and have great performance. Create an oval raceway, test your skills with s-turns, and more. The Premium Curve Pack is one of 7 different component packs that let kids BUILD, STUNT, and BOOST. The BUILD category enables kids to create dynamic track paths in their Track Builder world. Great gift idea for ages 6 to 10 years old.