This fun disc designed by Nite Ize is designed to let you play Ultimate Frisbee at night. The disc comes in four colors, red, blue, green and multi-colored. The multicolored “Disc-O” changes between 5 alternating colors. This disc is 185g and is equipped with a signle LED lights, 9 fiber optic bands that push the lights towards the outside of the disc. This disc is powered by high quality, lightweight batteries which are replaceable. This disc is soft, comfortable, durable as well as water-proof!