Uviko&trade; Best Reusable Beer - Wine Saver Silicone Beer bottle Caps Tops Sealer Lids Cover- 6 BREW CAPS Designed to help keep beer fresh! Brightly multi-colored 6 Silicone Beer Caps. The Beer Caps are reusable and can be kept squeaky clean after each use as it is Dishwasher safe. It is able to stretch and match the conventional Bottle Cover Size of most brews and also covers some larger sized bottles.