Weston 8" x 12" Quart Vacuum Seal Bags are compatible with Weston, FoodSaver, Ziploc and other heat-seal vacuum systems." These durable 2 ply, 3 mil bags keep food fresh up to 5x longer, helping you save up to $2,275 per year.** Preserve fresh meats and produce from the garden, or use the bags to individually package items purchased in bulk or to save leftovers. These large quart-size bags are also great for storing dried foods, protecting documents, and for keeping valuables, emergency supplies, firearms, and many other items dry and sealed until ready to use. The BPA-free material is safe for the freezer, refrigerator and sous vide cooking. Easily boost the flavor of foods by adding your favorite marinades to meats and vegetables and marinating right in the bag. Cook perfect steaks, fish, pork, eggs and other foods in these bags in the sous vide cooker. The 2-ply, 3 mil construction resists tears and punctures. The box contains 30 pre-cut vacuum sealer bags.