Thumbs up, Tips for Use and a Warning
I ordered these to supplement my original set, from a different company. The original company is no longer in business but those lids are much thicker. That said, I have had no issues with this set and was glad to get some large enough to cover pot pie leftovers and stock pots. Though a bit thinner, I have been using them All the time for months with zero issues. I may need another set, cuz those big ones come in Handy! They stretch a little to fit snugly. I have also used them on wet glass bowls, dry glass bowls, large metal Instant Pot insert, a glass pie pan, etc. and have had Zero issues with them not staying put. If you put them in the microwave, they will lift due to the steam, but that is just obvious. *UNLESS* these are being shipped from multiple third-party vendors, but from Amazon, the ones I received are great. I use a handful of them every day. If they are coming from different vendors, they *may* then also be from different manufacturers and of a different quality than the set I received. If I ordered another set, it may be totally different! Make sure you can return them and test what you get well.***Tips: For those with application issues -When applying a lid (I do it dry or if the bowl has just been washed, makes no difference, works great - usually not going for a waterproof seal here), start with your pinkie & ring fingers in the bottom edge and place its edge on the rim nearest you. On the pot pie dish, I will "set" the lid edge on the dish, then tuck them both against my tummy for leverage (carefully, of course, and there are already silicone counter liners on the surface so sailing is lessened as a possible outcome) and to hold them in place. I then use both hands to stretch the lid to the opposite edge where it self-anchors/sticks, and then tuck each side around the edges. Easy & done. Try to think of applying them like you are laying a top pie crust on a pie, but you will *start* by anchoring that first leverage point nearest you (you could place the bowl on a damp towel to hold it), then using your hands to stretch it around the rest of the bowl. Once you get the hang of it, it is easy as pie.These replace toxic cling/saran wrap and are safe and very handy. They are an Awesome product and a Blessing. I use them *constantly* - microwave, fridge, snacks, etc. Be patient & master the technique, as with anything else. I have yet to be unable to apply them to the smallest or largest item, wet or dry, quickly and easily. I always start by anchoring the lid edge on the item closest to me (if the item is smaller, you can then use your palms to stabilize) and stretching it to cover the item easily once it has been set/anchored. It isn't a terrible product; it simply requires a technique - like tying your shoes did. They are a bit thinner, and silicone, so they can tear around sharp items or overstretching/mishandling.Also, when they arrived, they were almost glued together like a big fat blob, lol. I had to patiently unfold them all, but they have been of immense help in the kitchen and I am SO glad these things exist for us (I always hated saran/cling wrap anyway, working with that stuff IS terrible).WARNING: NEVER - and I mean NEVER - cover an open can and leave it out or put it in the fridge. You can get botulism doing that! I know it is annoying as heck to put canned leftover items to a container, but Do It. If I can do it on several canned items during pizza batch cooking at 3:am and half asleep, you can do it, too.***For those who say they don't offer stackability, if you put an appropriately-sized plate on top of the item you just put the silicone lid on, voila - you now have Stackability.