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Vacuum bags come with three enclosed sides and also called barrier bags. Vacuum sealer bags are specifically designed for reduced air permeability to hold and maintain a vacuum within the bag.  

Vacuum bag packaging is the most common form of vacuum packaging. Vacuum bags are used in homes and high volume commercial packaging facilities. Multiple sizes, thicknesses, and types are available to accommodate a variety of products.

The most common bag thickness is a three mil thickness or three-thousandths of an inch. The 3 Mil thickness is thick enough to obtain a dependable seal for long term storage. Larger products with sharp edges and jagged corners commonly use a five mil bag thickness or higher. 

The type of vacuum sealer being used often determines the kind of bag that can be used. Vacuum sealers with an internal compressor often require channeled vacuum bags due to low vacuum pressure. Channeled vacuum bags are textured with small dimples to allow air to escape the bag. Channeled vacuum bags lack the clarity smooth bags do but provide an excellent vacuum.

See below for descriptions of each type of vacuum bag and a vacuum bag chart to help determine the right type of bag needed.