Product Description Size: Air Pump: 8.3 * 7 * 14.5cm / 3.3 * 2.8 * 5.7 inches Stopper: 3.5 * 1.8 * 4 cm / 1.4 * 0.7 * 1.6 inches Material: stainless steel + silicone Package include: 1 x Wine Saver Pump + 4 x bottle stoppers (all reusable ) Made of high quality plastic and silicone, non-toxic, durable and sturdy, environmentally friendly and healthy to use. Easy to use: just put the cap in the neck of the bottle and pump to remove the air. The wine pump creates an airtight vacuum that keeps the wine fresh after the bottle has been opened. The bottle caps are washable and reusable, can be used with or without the wine pump. The wine bottle vacuum pump is used to hold your wine for later tasting and includes two rubber corks. Fits all bottle sizes, perfect for sealing wine , Champagne, beer bottles etc.