This plastic spring will walk downstairs when set up in the right conditions. We've all seen them. What you may not have seen is a walking spring that also glows in the dark! Glow powder is embedded that will allow it to glow for 30 minutes to 1 hour in the dark after being exposed to sunlight, houselight or black (ultraviolet) light. The springs are yellow in visible light and glow green in the dark. Wonderful for loot bags at parties.
