This Glow in the Dark coaster are made with resin and UVPaqlite nuggets that are non-toxic. The coaster will recharge with sunlight, ambient light or a flashlight and will last 10-12 hours. Use this over and over forever. This is a perfect coaster for your bedside table to put your glass of water on. Never have to turn on a light at night to find your glass again. Can be used for camping or during a power outage or as a night light as well.
4” x .25” round disk