Glowing charms for dog and cat collars. These hand-made glow-in-the-dark charms make it easy to find your pet in the dark. It recharges its glowing power from the natural light during the daytime and glows all night long. This will be the most energy-efficient item you will ever own as it is always on, (no batteries needed). This will continue to glow non-stop for years and is completely safe. It can be washed with mild soap to clean. Great for your keys, backpack, or anything you want to be able to find in the dark.