1、Material: Plastic, 3 color LED light and battery, each package includes 20 pieces plastic diamond LED glowing rings, no heat and safe.These flashing Led rings are environmentally friendly, non-toxic and are designed to last for a long time. Easy to use, and absolutely amazing.<br><br><b>. 2、Wildly use: These LED rings are very eye catching in the dark and can be applied at glow in the dark party, birthday parties, bachelor party, discos and concerts; They are also suitable for adult balls, carnivals and celebrations.<br><br><b>. 3、Add color to your party and light up the night: These light up rings are charm of the party, making your party so colourful and shiny; Wear rings and share happiness.<br><br><b>. 4、Adjustable and easy to use: Can fit different size fingers and easy to turn up and off the lights by pressing the bottom under the "diamond".<br><br><b>.