DISHWASHER SAFE & EASY TO CLEAN: Our reusable silicone bags are designed for convenience. They can safely go on the top rack of the dishwasher, enduring temperatures up to 120℃/250℉, thanks to the upgraded food-grade PEVA material. While machine washing is an option, we also recommend hand washing and air drying. Note: these bags are not microwave safe. LEAKPROOF & EASY TO SEAL: Featuring a double zip lock design, these reusable silicone bags are waterproof, leakproof, and airtight. They securely store food, keeping your lunch fresh and well-preserved. The non-slip zip lock mechanism allows for easy opening and closing, making them user-friendly for everyone. FOOD GRADE MATERIAL & FREEZER SAFE: Made from BPA-free food-grade PEVA material, these reusable gallon bags are safe for food storage. While dark sauces may leave stains, this does not compromise their effectiveness. The silicone bags also prevent freezer burn, ensuring your food remains fresh and delicious for longer. SUSTAINABLE & RECYCLABLE: Designed with the environment in mind, our durable PEVA silicone bags can be reused hundreds of times, replacing over 300 single-use plastic bags. This not only benefits the planet but also saves you money. VERSATILE & PRACTICAL: This set includes 6 reusable gallon bags (11"x11"), perfect for various uses such as marinating meat, storing frozen food, or organizing office supplies. If you encounter any issues, please contact us for assistance.