Seal-a-Meal VSWB3 is a vacuum food storage system that helps to preserve the taste of stored liquids. It includes three bottle stoppers and an accessory hose for use with all Seal-a-Meal accessories. The bottle stoppers fit most standard glass bottles and are great for storing wine, salad dressing, oil, vinegar, and other non-carbonated liquids. The vacuum sealing process removes air from the bottle, which helps to prevent spoilage and preserve the flavor of the contents.