Sofie's Cottage Beer Bottle Savers, Silicone Bottle Caps ~ Set of 6 Fun Colors Bottle caps fits most standard beer bottle. Dishwasher safe, FDA approved, food-grade silicone. Set of 6, contains: 1 Green, 1 Orange, 1 Purple, 1 Blue, 1 Red & 1 Black. Helps to seal the bottle to keep beverage fresh and prevent spills, or use as a drink marker. Great for camping & picnics, keeps dirt and insects our of your drink.