Reply #5: I've seen that you can buy a dense fabric sleeping sacks

[ThomCat]

with rolled, double seams. Supposedly they can't get through the fabric or the seams. So that you aren't sleeping directly on the sheets, and the bedbugs can't get to you directly from the sheets either.

If they are there they end up crawling onto sack instead of onto you. Only the ones up near your head, if any, might get anywhere near you.

I don't know first hand if these things work. Thankfully, I've never had to test one. But the idea of keeping the bugs off of you sounds like a good idea to me. Especially in conjunction with other options that kill the things.

If they are dense enough fabric to keep out any bugs that are used to burrowing through fabric, I'm guessing this must be microfiber or silk. So expect it to be warm.