Electroluminescent wire (often called EL wire) is a thin copper wire coated in a luminescent substance that glows when an alternating current is applied to it. It can be used for a variety of applications, including safety and emergency lighting, Christmas or Halloween decorations, vehicle and structure displays, rave parties, and more. This EL wire kit includes 9 feet of 2.3 mm EL wire in light green coloring and a battery pack controller that has off/on and strobe mode. This will benefit the discerning decorator who needs to liven up their Christmas parties, rave parties, Halloween costume, or retail store display!