They protect my sheets well. It's been a few years since I purchased sheet protectors because the last time I bought them I bought 500. These are a nice weight and very clear. The price had gone up more than I expected but that is the case with so many items.
These are a great mid range sheet protector. They aren't super flimsy and not super thick. I think them coming on a box is a bit of waste but that's my option.