So, you have a date with the wife. While she's looking good, your becoming infuriated and looking stupid while pulling this pump that ultimately doesn't do a thing.If you're lucky enough to get a vacuum,(the only way to tell is to release the vacuum and listen for the sound)half the time you pump and pump and get no vacuum at all. If you bump the top even slightly while putting the bottle back in the fridge, you lose the vacuum and have to start all over again. I say save the money and drink the entire bottle, you'll both be happy you did.