Food storage bags feature a built-in re-closable zipper with easy tear notches. The opposite end is left open for easy loading and sealing in your vacuum packaging machine, and the food storage bag is designed for use with all vacuum packaging machines. The heavy-duty 3 millimeter thick material provides a superior bag for optimum freshness and a reliable seal. Patented mesh technology is a full mesh, third textured layer that provides complete air removable for greater freshness and prolonged bag integrity. Eliminates freezer burn and dehydration and ideal for use in and out of the kitchen. Bags can be frozen, refrigerated, microwaved or boiled.