Grip n' Seal Freezer Bags with Stay Open Design feature a patented Stand-up bottom that makes them easy to fill, like having a free pair of hands in the kitchen. Grip n' Seal technology makes them easy to close securely while also helping to lock out freezer burn. Whether it's soups, sauces or stews, filling, closing and freezing just go a whole lot easier. Reusable freezer bags are microwave-safe and BPA-free. They're the ideal size for portioning out your culinary creations for the freezer.