So far seems good. Stiff enough to shap, didn't fall apart at a hint of moisture, separated my lunchables I bought these to use while I figure out the priority of reusables I want or need, the right sizes and which type are worth investing in. These are versatile while most of the silicone and beeswax items are more limited and I don't want to clutter up my kitchen with things I only use twice a year. That's not sustainable at all! :( I also expect to stock these for gifting, fire-camping, and for those uses not worth buying something fancy for.
My intended uses: Onigirazu, sandwiches, diy bento %26 freezing separators, baking sleeves, and temporary sheets for rolling out tortillas and flat breads etc. I won't be using them to freeze foods on. I have reusable cutting sheets that I keep one side smooth for that exact purpose. *Tip I buy two pairs, cut one pair into 3 half sheets and 2 quarter sheets. The smooth sides double as funnels and scoops. I suspect these will do that too with dry ingredients for those who don't have/want the cutting sheets.
The con: a bit thin %26 not as robust as I hoped but these are the affordable versions.
Picture is of less than one quarter of a sheet cut to make a lunchbox separator.