Embrite LumaRing Coaster

Outside diameter: 3.94". Inside diameter: 3.54". Glow color: Green. Circular glow ring crafted from Embrite photoluminescent compound. Silicone platform with circular grooves. Indoor or outdoor use. When exposed to ordinary room light, sunlight, or UV light the Embrite will glow for as long as 12 hours. Boxed.