Solar powered toy roller coaster; Economical - absolutely no batteries required! Solar panel converts sunlight into the energy needed to power the roller coaster's motorized moving staircase;A great way to demonstrate how light energy can provide clean, free, efficient energy;Flat-packed for build-it-yourself fun; Recommended for ages 10 and up;A fun but educational gift;Full instructions included

• Build-it-Yourself Solar-Powered Roller Coaster

Build-it-Yourself Solar-Powered Roller CoasterTHU