Goo Blinx Light-Up Goo putty can be stretched, pulled, bounced, manipulated, and stuck to things. This is the world's first translucent putty, allowing light to transmit through it. Each UFO comes with a brilliant flashing light module, and when lit up inside the putty, the visual effects are stunning! There are several colors of Putty, selected at random. The UFO is about 3'' in diameter and 1'' tall. The flashing module continues for 20 seconds at a time.