The Ziploc® Storage Bags are designed to help keep food fresh. With extended tabs for easy opening and Grip 'n Seal technology for a secure seal. Ideal for refrigerator food storage, managing pantry staples, packing healthy lunches, storing leftovers, and even storing arts and crafts supplies. They are strong and durable, and microwave safe too. The double zipper seal lets you feel, hear and see the bag close from the edge-to-edge, so you can feel confident your food is protected. Mindfully made so you can use, reuse, then recycle. BPA Free.