1. FOOD GRADE MATERIAL Choose brand for TRULY food-grade reusable storage bags. Made of food-grade PEVA material that is PVC, BPA, Chloride and Lead free. Healthy and safe for family and earth. 2. LEAKPROOF & EASY SEAL Upgraded double closures ensure an airtight leakproof seal, perfect for storing and preserving food. With upgraded widened side and non-slip zipper design, you can easily open and close the snack bags. 3. FREEZER SAFE & EASY TO CLEAN The freezer bags can lock out freezer burn while keeping food fresh and full of taste, perfect for freezing meat, chicken, fish, fruits and vegetable. Upgraded PEVA material that is dishwasher safe under 60℃/140℉. Put on the top rack of the dishwasher, while skipping high-temperature functions to extend the lifespan of the bags. Not microwave friendly. 4. REUSABLE & DURABLE1 gallon storage bags are reusable and lightweight, they can be reused for hundreds of times, one extra thick reusable bag can save more than 300+ disposable baggies, which not only will change the way you store, cook and even eat but also can save your money and save the planet.