Nite Ize® GSB-07-R7 GlowStreak™ Motion-Activated LED Dog Fetch Ball, Disc-ODogs don't get tired just because the sun goes down, that's why this LED ball lights up the night for endless hours of play with your best four legged buds. The GlowStreak LED Ball is the most technologically advanced nighttime fetch ball ever made, and holds up to the best arm or ball launchers around. This robust rubber ball has a protected inner core that contains an advanced motion activated LED module with bright red or color changing Disc O