Resealable zipper: you can either manual seal zipper part, or you can heat seal the open top section above the zipper, so that achieve storage effect, and these food storage bags can be applied many times Convenient to use: just open and seal, very easy to use for packing and storing, transparent window design allowing for a quick glance at contents inside, please make sure to close the zipper seal tight to prevent leakage and ensure freshness Material and size: these resealable bags are made of polyethylene material, non-toxic and reliable material, you can put items in them safely; We provide you with several size selections, can meet different demands, please refer to the pictures for detailed information, please check the size carefully before placing an order Wide applications: very suitable for packing coffee beans, bath salt, candy, pill, sugar, rice, cookie, tea, nuts, dried fruit, snacks, popcorn, beef jerky, or other food you want to store Package includes: you will get 100 pieces resealable food storage bags in one package, large quantity for satisfying your usage and replacement, or you can share with others Make sure the opening is closed before you put the item in.Put in storage items.To ensure that the opening no residue.Along to seal zipper part, make its seal.