The Wicked Sky Rider Ultimate LED is a precision weighted light up 175g flying disc. This is the official disc weight for the sport Ultimate, as recognised by U.K. Ultimate, the governing body of the sport in the U.K. Its perfectly balanced computer aided design allows you to throw smoother, more accurate and longer range flights than ever before! With ultra bright blue and red LED lights, it lights up the night sky! 175g high performance disc Stable, long range flights Precision weighted design Smooth, accurate flight path 4 ultra bright LED lights (2 x red and 2 x blue)!