I've used these and other brands of laminating sheets at my job for the past 30 years without issues. Yes, there can be bubbles, but if you take time to place the document ON a laminating sheet rather than the laminating sheet ON a document, it's much easier. Use them on a dark surface and it's easy to see where the edges are and how they line up if laminating with 2 sheets. Bubbles can be smoothed out with your hand easily if the sheets are applied correctly. These are great bang for your buck!