[4 mil] .....these are great, with the possible only flaw being they are TOO useful. If you print to sell like I do, you can go through an awful lot of these bags, and I use 3 sizes besides. So if you order them, don't be cheap or 'dumb', buy twice or thrice what you need, and save the shipping charge on the next order, the one you don't need to make since you doubled, or tripled up your order. When you crack open that second bag, you'll thank me. Same with paper, get more than you need, since shipping paper is not cheap. These bags are very well made and work well and make your prints look good going out.

[1.65 lb] These poly bags do the job well in protecting mounted prints. I've never gotten inventory back from a dealer with a damaged print or scuffed matte. And they last many years without degradation. Highly recommended.

[2" Flap] Ive been ordering hard to find items from B&H Photo for well over 15 years and I have to admit: theyve never let me down. Exactly the right kind of item I need no matter how unique, at a very reasonable price, and quick shipment of items ordered (even those not in stock where they have to notify their supplier to direct ship to me). The large archival bags are perfect for containing a LOT of extremely old magazines, brochures, and books in my late sisters Estate so they wont loose any of their value. Im talking 1900-era LARGE magazines as well as early 1900 highly collectible thick scrapbooks as well as family heirlooms. These arent the everyday expendable items I normally have to buy - theyre once in a lifetime. I knew I could rely on B&H Photo to have the right archival supplies to store hundreds of items so my late Sisters collections can be passed on to delight others. Thanks for being there with the right products at the right time.

[2" Flap] We packaged art prints in these bags. Provided durability and protection when being handled by potential buyers. Perfect fit for our application.

[100] To me this has proved to be a wise investment. I have taken photos for personal use and really had no good place to store them or a way to pass around to friends and family without them getting finger prints all over them. It has a flap to secure the image and help keep dust out. They seem fairly rugged also.

[Polyethylene] These bags are well made, provide just the right amount of protection from handling and the elements, and are a great value. I use them for every finished print, whether I'm storing, shipping, or showing. Of course, a print can't be fully appreciated while still in the bag, but they are very unobtrusive when used for viewing and well worth the protection from skin oils and other handling damage.

[2" Flap] Needed to secure a number of small prints and B&H came to the rescue with, in my opinion, the best product available for storing your work. Not only that but they offered them at the lowest price. Once I realized the bargain value for Print File quality, I bought 6 packages!

[1.65 lb] Large bags that I use to hand out 8x10 photos at events. Works well with my workflow.

[13.2 x 9 x 0.6"] Great product from B&H. Good price. Fits 8.5x11 prints perfectly. Room for more than one. Good for shipping or hand delivering to clients. Depending on how particular you are, these may not be suitable for porfolio viewing as they are not crystal clear.

[Polyethylene] This is exactly what I wanted. The work wonderfully for my prints.