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I like these storage bags. they are a little bit more pricey but you're able to get a cleaner bag overall. there's not as much spillage and you're able to flatten out the air a lot easier. I ordered mine online to cut back on the price but I would definitely suggest them. I like that they have a two rip top so that you rip off the first part when you're filling it and then to make sure it's not been tampered with you rip the second part when you go to refill your bottle. They are one-time use. do not use them more than once! as they're no longer sanitary but they do have a large area to be able to put your information and so you're able to write clearly. One thing I did not like about them is that once you open the box they are hard to get out so you kind of end up spilling them all over the place and they're not necessarily as sanitary at that point, or at least not the outside. one thing I would definitely say though is to make sure you read the instructions. it sounds funny but they do hold important information. Another feature I like on these bags is that you're able to fill it pretty close to the right amount. it is suggested from experience that I've learned to measure in the bottle and then pour into the bag but if you skip this step it's not all over with. you're going to get pretty close to if not right onto the amount that you intended. It is also a lot easier to fill them because once you have a little bit of liquid in the bag it does stand up pretty decently although if you do pour too much in it is a little bit more difficult to get it back out.i definitely recommend these but I do suggest getting them online because in-store they are a little bit pricey.