PanSaver Slow Cooker Liners are, without a doubt, the very best slow cooker liners on the market. I've been using them for some time now, so I can say this with experience behind me. First, they have a much higher heat tolerance than any other liner out on the market, and I've tried them all. The problem with most liners is that unless you keep the slow cooker down very low, the liner MELTS down, and by definition, goes into the food that you are cooking. Yuck! These have NEVER melted on me, and my slow cooker is not the typical porcelain pot, but is metal instead, so the heat comes through to it from the heating element at a much higher degree level. So that's the first thing I like about these liners--they just don't melt. The second thing I like is the elasticized edge on it. I always put in water into the pot before I put in the liner, but it ALWAYS cooks away or evaporates away by the time the food has been cooked. With this elasticized edge, there is considerably more liquid left in the pot between the pot and the liner, so the liner, again, just doesn't stick to the pot itself. Other bags are completely opened and have nothing to keep the evaporation down, so the water disappears quite quickly. Not so with the PanSaver. This also makes it easier to clean the pot because nothing sticks to it. That's the second thing I like about this liner and those two features are about enough for me to stick with the PanSaver for a very long time. The only thing that I didn't like was that the price on the PanSaver through Amazon was quite a bit more than at the market where I purchase it. The reason that I got it through Amazon was that I just got out of the hospital and couldn't go shopping, so this was very handy for me. If this is the only place you can get these, then BUY them! They're worth it to know that your plastic liners aren't melting into your food, but if you can get it locally for less money--much better.