【Freezer Safe & Keep Food Fresh】The freezer bag is designed for deep freeze while keeping meat, seafood, fruit,veggies, it can prevent freezing burns while keeping the food fresh and rich in taste, perfect for storing and preserving food.The double seal closure keeps food in fleshness and full of original flavour.The temperature-resistantis -122℉(-50℃) to 140℉(60℃).【Stand-up Design & Leakproof】: With the humanized stand-up design, the reusable lunch bags extends its inner room, it can store more food and can stack beautifully in your fridge, make your freezer organized and neat. The upgraded double ziplock Sealing technology makes the reusable bags airtight, leakproof, waterproof and hygienic, no where for liquid and odor leakage，perfect for freezing meat, chicken, fish, fruits, and vegetables。【Food Grade Material & Eco-friendly】: These reusable storage bags are made of FDA food grade PEVA material, it is safe for storing all kinds of food, PVC-free, chloride-free, lead-free and BPA FREE. It is recyclable and ecofriendly. One reusable bag is equivalent to 500+ disposable plastic bags. PEVA food bags will not pollute the environment. It is an excellent alternative for plastic bags。【Multi-Sizes & Multi-Purpose】: The 12 packs Reusable food storage bags have 3 different sizes to meet your needs. 3 Gallon bags(10 x 7.2 x 2.09 inch)，4 Sandwich bags(8.66 x 7.87 x 2.09inch)，5 reusable snack bags (8.66 x 5.3 x 2inch).They are not only perfect for food storage, but also perfect for storing office supplies, cosmetics, jewelry, great for taking lunch in them for work or travel。【Easy to Clean】 The reusable sandwich bags is easy to clean, we would suggest to clean by hand, as the dishwasher will damage the zipper of the food storage bags. You could clean with the bottle brush and put the bags on the top of a mug or cup for air dry, Please Do NOT wash in the dishwasher, microwave and oven。