Ziploc brand Freezer Bags with Stay Open Design have a patented Stand-up bottom that makes them easy to fill, like having a free pair of hands in the kitchen. Microwave safe and BPA free, reusable freezer bags. New ziploc bonus pack with at least 10 percent more bags than previous ziploc bag count They're easy to open and close thanks to grip n' seal technology, which also helps to lock out freezer burn and lock in freshness so the food and treats you store taste great The patented stand-up bottom lets you fill them with ease, making them great for handy freezer storage, while they're also safe to use in the microwave and are bpa free For keeping things handy in the freezer or on the counter, try ziploc brand freezer bags with stay open design - their stay open design makes filling and storing everything from sauces to soup easier than ever, packaging may vary