It's weird to be asked to review basic mailing labels. It's weirder that I'm taking the time to respond. What does that say about me? Should you even trust a review by someone who clearly has not much of a life? That said I've used mailing labels for over 30 years since we ran them on dot matrix printers single row unending column. These are the generic for Avery they work just fine. If you use Word to merge and print them move the address field one or two spaces from the left and hit return so there is a space above the address line they will fit on the label better.
The labels do the job I purchased them for. I wish they were a bit easier to remove from the backing and use. If I only use a few the page may get damaged and then is sometimes difficult to feed into the printer to print additional labels when needed.