eatures: • Ziploc Slider Freezer Bags have a flat base and expandable bottom to make it easy to fill, even with liquids • Perfect for storing bulky items and food. Filled bags stand side by side in most refrigerators, freezers, and pantries • Features our Smart Zip Seal. Slider closure makes these bags easy to close, easy to open • Freezer bags help to prevent freezer burn while keeping food fresh and full of taste • Microwave safe plastic (use as directed). When defrosting and reheating food, open the storage bag zipper one inch to vent. BPA free Learn More