The liners work fine, they were just a little too big for my fryer. They still do OK, but they will leak a bit in those cases -- using two liners did help with that situation. If you're just re-heating already fully-cooked/fried foods (frozen onion rings, fries, chicken tenders and so on), I didn't find it to be a problem in those cases.
Sontax Air Fryer Liners are ideal for households that frequently use air fryers, especially those needing liners able to handle high temperatures up to 450°F.