Ready, set, race with the Build-A-Road Double X-Track! Double X-Tracks for twice the fun - race over the mountain and through the tunnel! Build your own race course with over 200 pieces and over 11 feet of interchangeable, flexible track. Combine with other Build-A-Road sets for exciting adventures. No tools required - the pieces snap together easily and run perfectly over and inside the tunnel. Your child can interchange the pieces all by themselves. Includes over 11 feet of interchangeable, flexible track, 2 battery operated cars, and 2 X-track connectors. Over 200 pieces total. Requires 2 AA batteries, not included. For ages 3 and up.