Meet our glow-in-the-dark silicone dog ID tag, powered by phosphorescent pigment. Every QALO dog tag is non-toxic and jingle-free for your dog’s wellbeing. Your Glow dog tag is best charged with direct exposure to sunlight. Place it under the sun for a few minutes, and watch the afterglow shine bright in the darkness. Please note, the duration of after-glow will vary between colors.