NextGlo isn't like any other glow-in-the-dark technology you've seen before. The photoluminescent technology allows maximum glowing in a variety of colours, making these perfect for nighttime identification as well as visibility. This high-performing, long-persistence glow charges in minutes and lasts for hours. With the ability to regain its glow power from any light source, including both natural and artificial sources, the NextGlo Visibility Marker is perfect for everything from tent zipper pulls, key chains, backpacks, and more. This Visibility Marker attaches and detaches using the included S-Biner® MicroLock®, making it easy to find what you need when you need it.