The material of the light string is PS. There are 10 cracked eggs on this string of lights. Powered by 2*AA batteries (replaceable). This string light is very suitable for amusement parks, carnivals, circuses and other entertainment centers. This is a great addition to any place where there is a birthday party. Cracked egg string lights are very suitable for decoration during Easter. We also have many other styles of string lights, your inquiry is welcome. You can put a sticker on the package.