I saw a hand held bag vacuum once on TV and could not find it in store. It worked with that resembled standard zip lock but had valve for removing the air. What is it?

The product you are referring to is most likely a "handheld vacuum sealer" or a "portable vacuum sealer." These devices are designed to remove air from specially-designed plastic bags, creating an airtight seal to preserve the freshness and quality of food or other items.

One popular brand that produces handheld vacuum sealers is FoodSaver, which offers a range of models with different features and capabilities. These devices typically work by placing the open end of the plastic bag into a designated vacuum chamber, and then using a pump or suction mechanism to remove the air from the bag. Once the air is removed, the bag is sealed, creating an airtight barrier.

The plastic bags used with handheld vacuum sealers are usually made from a special material that allows the air to be effectively removed while maintaining the integrity of the seal. These bags often feature a valve or port that allows the vacuum sealer to draw out the air, while preventing air from re-entering the bag once the sealing process is complete.

Handheld vacuum sealers can be a convenient and effective way to preserve food, reduce freezer burn, and extend the shelf life of various items. They are compact and portable, making them easy to use at home or on-the-go.

Here are some tips for using a handheld vacuum sealer effectively:

- Choose the right size: Select a vacuum sealer that is appropriate for your intended use and the size of the items you want to seal.

- Prepare your bags: Make sure the plastic bags you are using are compatible with the vacuum sealer and are properly placed in the vacuum chamber.

- Seal properly: Ensure that the bags are sealed properly to prevent air from re-entering.

- Store items correctly: Store sealed items in a cool, dry place to maintain freshness.

By following these tips, you can effectively use a handheld vacuum sealer to preserve food and other items, helping to reduce waste and extend their shelf life.