These are so easy to use. They have a sealing band along the top just in case you don't have a heat sealer. But I rarely ever use that, as I do heat seal them. They are the perfect size for my larger cookies and they add to a great looking presentation and to keep the cookies fresher longer.
I ordered 3x5 and 4x6. I received 4x6 and 5x7, but was advised the shop does not carry 5x7. They are definitely 5x7 and therefore not what I need. I do love the 4x6.