Review on High-Quality Crucial Replacements for Vacmaster VF408 - Compatible and Reliable by Mark Harris

The bag stays in place during use with no problems. As others have said it seems to be a little thinner which wasn't a problem for me. I noticed that the length of the bag is maybe 3 (maybe 4?) inches shorter and doesn't stretch as much as the manufacturer's bag. However, for me it is worth paying the same amount for 6 of these bags instead of 3.