This Product is Made of Food Grade Plastic & Can be Used to Enhance Displays at Home for Parties, Weddings & Other Events. These Lights Will Add Sparkle When Added to Your Display Vases, Jugs & Look Great in Clear Transparent Wine Coolers. the LEDs Automatically Switch on When Placed in Water & Off Again When You Take Them Out! Each One Comes with Batteries Already Fitted. They Are Completely Safe to Put into Any Type of Beverage to Keep Your Favourite Beverage Frosty. They Will Provide Many Hours of Fun & Entertainment When Used Properly. But Pls Note That You Do Not Put It in High Temperature Hot Drink. Minimum Quantity: 100.