BAGS STAND UPRIGHT FOR EASY FILLING: Easily add soups, stews, marinades, fruit purees, and other liquids and foods to these freestanding vacuum sealer bags. With expandable-bottoms, they stand upright on the counter for easy, mess-free filling. COMPATIBLE WITH MOST VACUUM SEALER SYSTEMS: Can be used with the Weston Wet & Dry Vacuum Sealer 65-1601-W (sold separately) and many other heat-seal vacuum sealer systems. BPA-FREE BAGS SAFELY STORE FOOD: The food vacuum sealer bags are made of 2-ply, 3 mil material and are safe for freezer, refrigerator, and for sous vide cooking. KEEPS FOOD FRESH UP TO 5X LONGER & HELPS PREVENT FREEZER BURN: These vacuum sealer bags for food lock air out to keep foods fresher longer and help to prevent freezer burn. SAVE MONEY AND REDUCE FOOD WASTE: Reduce food waste and save up to $2,275 per year.* Great for preserving fresh produce, meat bought in bulk, leftovers, foods and drinks for travel, and more. *The average American household of four throws away up to $2,275 of food each year, according to the National Resources Defense Council ("Wasted," 2012).