the sides on the original packaging of the stamp sets easily split with repeated use so I got these. These are made of a durable thick plastic. the larger ones will fit a stamp set, a stencil set, and a die set together (which is why I got them). they are about an inch taller than the paper insert from the stamps. A couple of them in one pack had small cuts in the plastic towards the top but it didn't effect my use of them. The top is slightly narrower than the paper insert from the stamp set so I had to bow it a little to get it in. I ended up taking the zipper thing off to get the paper insert in easier and then pushed it to the bottom and cut the excess pouch off. Doing that makes it easier to pull the paper insert out to reference it. Not sure what I will use the smaller ones for yet.