Let me start by saying these bags are a game-changer for artists and photographers alike. I've been using them to store my watercolor paintings, and the difference in protection is night and day compared to regular plastic sleeves.

The 2 mil polypropylene material feels substantial - not flimsy like some cheaper alternatives I've tried. My matted artwork slides in perfectly with just enough room to breathe, and the resealable adhesive strip gives me peace of mind knowing dust can't creep in.

What really impressed me was how well they handle different media. My pastel works maintain their vibrant colors without any alteration, which was a pleasant surprise. The clear visibility means I can still appreciate my pieces while they're stored.

The sizing is mostly accurate, though I did notice the larger sizes (16x20" and up) have more generous tolerances. This actually worked in my favor when storing bulkier mixed-media pieces.

One minor gripe: the adhesive is on the flap rather than the body of the bag. I learned this the hard way when a corner of my artwork briefly stuck to it. Now I'm extra careful when sealing.

The packaging could be improved - mine arrived with a noticeable fold mark from shipping. While it didn't affect functionality (and eventually flattened out), it might bother perfectionists using these for client work.

Despite these small issues, at this price point for archival-quality protection, these bags are unbeatable. They've become an essential part of my art storage system, especially when preparing for exhibitions. The ability to remove and reseal artwork repeatedly without degradation is worth its weight in gold.