I was worried these would be too small or tight to hold magnetic sheets inside as insert to keep metal cutting dies in place. BUT not they hold them well and can easily pull them out and put back in both without a lot of struggle if any. Now they may not hold a lot of dies and that might vary between dies but so far they are doing well. I think they are bit over priced for the amount of only 15 sleeves. I also took three out to use with half sized mini three ring note books. You have to punch a center hole and move two of the other holes enlarged with same punch so they are oval and accomodate the difference in placement of the rings. But seem solid enough to work out just fine. Ok now the biggest negative and one star off is the holes are punched but not always loose enough to easily punch out when attempting to put into your binder rings. WHAT. I ended up spending an hour literally punching pushing out these chads that should come off easily. About ever 2 or 3 one end chad wasn't even punched enough that it would come out by pressure. I had a rubber tipped stylus that worked ok but not great. I finally choose a ball tipped stylus with the ball just about the size of the chad hole and that worked best. It was faster than trying to use any of my hole punches. (I have plier punches with different size holes and multi sized spring punches that match exactly and even fancier more expensive hole punches but what was fastest most of the time was the ball tipped stylus. Except when it came to the ones that weren't loose enough to come out without reaming it or cutting it out otherwise.) The other negative is there was indentations across all as in every single sleeve that is distracting. I suspect the makers stack them together and they end up maybe getting damaged via those zipper slides that might explain it. Not sure but just bet it does. In the end I am here to buy more. I also have snap shut and velcro tab shut similar sized non punched pocket envelopes. I will punch all their holes and us them too. But you may need to shave off a wee bit the length of any 7" x 5" piece of paper or insert like magnetic card. For now I think I won't need to even with them loaded with most of my dies. If need be I'll do a wee trim like 1/16" to 1/8" but I think it won't be needed. I have not had problems with slides falling off. You may want to flip every other one around so to split the zipper ends up so they lay smoother in your note books if you use like I do and want multple ones in one book. But happy these worked out better than I thought they would for fit. I have two sizes of 6 ring note books by the way and the larger one they fit right on but smaller one no way it fits. So I don't recall the size differences. But I intended to gift a friend one of the journal binders and had bought a pair of them and then decided they would be great to use for die storage and travel with my dies to classes etc. and so ordered two more but those came smaller and that was a suprise. And these would not fit of course. And could not re-punch to make do. If they were not punched at all it would be possible to punch but it would get old fast making 6 single punches by hand for each sleeve. So no real problems except the indented plastic that is not getting better after more than a month and the poorly punched chads that some even aren't loose enough to even be pushed out no matter and needs to be punched out or reammed out. So one star off for those two things. Overall I am considering buying a second batch of 15.