Transparent Coaster , free wiring, no leakage, waterproof design, acrylic material for durability, safe and healthy,creating a romantic and warm atmosphere.The drink coaster Diameter 3.93 inch, each coaster has 6 Ultra-High Brightness LED lights, which can make the clear containers such as wine bottle, glass cup or glass vase become bright at once. Use beautiful light to decorate your bottle and beverage. QTY6k and above are based on Ocean Shipping.