Features: 1"x1"x1/4" Glow in the dark tag with ball chain Trident cutout Description: The Trident Glow Markers are perfect for marking all your gear, making it easy to find in the dark. These are super thick and super bright, they don't use electricity or batteries and last an incredibly long time. This tag is recharged by absorbing light from any light source, the brighter the light and longer the exposure, the brighter the glow.