Hot or Not? Gourmac Onion Saver

We saw these onion savers in the produce department at our neighborhood grocery last night, and we were intrigued. Apparently the saver is designed so that when your unused half (or 3/4) of an onion is sealed inside, the saver helps keep the onion fresh, moist, and airtight. Have you ever used one of these, and do you think it's useful?

We don't usually have a lot of leftover onions; they go pretty quick in our style of cooking! But when we do we just store them in a small baggie in the fridge and use them up quickly. But if your style is to use a slice here and there for a weekend burger or salad, then this may be helpful, perhaps?

You can see a little more about these onions savers at their Amazon page:

Onion savers in purple or tan, $3.39 at Amazon.com

Related: Hot or Not? Can Colander/Strainer

(Image: Amazon.com)