Take your BRIO World train sets to new heights with the 33995 Ascending Curves Track Pack. These twisty-turny, uppy-downy tracks bring speed, height and a splash of colour to your railway tracks. Use this train track set on its own as a closed-circuit track or build it into any existing BRIO World layout for added height, speed and fun. For Ages 3 and up. WARNING: CHOKING HAZARD - Small Parts. Not for children under 3yrs.