1. [Material]: This vacuum pump is made of stainless steel and food-safe silicone and is supplied with 4 reusable plugs. Vacuum pump creates an air vacuum that protects the wine, protects against bacterial and oxidation processes and protects the wine with a natural, fresh smell and taste up to 14-15 days after opening the bottle. 2. [Smart design]: The pump handle is ergonomically designed to simplify pumping and avoid pinching your fingers. 3. [Ease of use]: Insert the wine stopper, pump the air out of the incline of the bottle to remove the pump, and secure the stopper. Pull up the inner tab to release the plug. 4. [Function]: the pump is quite small, it is good for travel, it can be used for various events, wine tasting, festivals, wine bars, restaurants, houses etc. 5. [WINE SAVER VACUUM PUMP SET Contains] 1 x wine-saving vacuum pump and 4 x vacuum bottle caps (all reusable). With enough closures, you can enjoy different types of wine at the same time and not worry.