Once I got the right size, I found these fit comfortably, are lightweight in terms of the thickness of the fabric, and affordable. Since these need to line-dry, and odds are one pair might not last a full day, it helps to have several.
Size was tricky. I ended up going up 2 numeric sizes from my usual size in Jockey for her cotton undies. I wish I'd had a better sense of what size to get in order to avoid returns. These are full coverage granny panties, but there's a sense of security in that, given their purpose.
I haven't tried these in hot weather in the south, and I'm somewhat concerned they'll feel plasticky in 90+ degree heat and humidity. The mesh should help remedy that. I hope.