Also listed on other sites. The first purchase will be prioritized, and cancellations may occur, so please understand. Glow-in-the-dark tubes - These were the brightest I've ever bought! I think they're convenient for marking at festivals, for children, or for nighttime pet walks. Since they don't have a power source, they need to be illuminated with a bright light before a night walk! Please look at the photos and only purchase if you understand and accept no claims and no returns.