Stasher Reusable Storage Bags are a set of 6 bags, including 3 sandwich-sized and 3 snack-sized bags. Made of platinum silicone, these bags are airtight, expandable, and lockable, making them perfect for storing food. They are also freezer, dishwasher, and sous vide safe. The bags are clear in color and come with features like BPA-free, easy to clean, and reusable.