The patented Airless Matrix design makes the NightBall football easy to throw and catch. Built-in super bright pulse LEDs are motion sensitive and light up with every throw, glowing brighter the more the football spirals and spins. Made from nontoxic TPR material free from latex and phthalates, the NightBall is waterproof and it also floats. 9" x 5". LEDs are designed to last 40 to 50 continuous hours or approximately 150,000 pulses. Thermoplastic rubber. Spot clean. By Tangle; imported. Kids' Wear.