While I do like these I prefer the earlier version of the product that had BOTH ends sealed and just the top open with the flap to secure. The various colors help organize different projects.
I teach one-on-one private language classes (ESL and French) and use these poly jackets for my teaching materials. They fit neatly in my tote bag and are protected from creasing. I can also keep various language topics separate by putting them in separate jackets. This is a great product that I frequently order. Although I use them for professional purchases they could definitely be used for personal purposes e.g. protecting important personal documents photos menus etc.
These project jackets really stand out among all the different paperwork on a desk. Transparency lets you see exactly what's enclosed; and these are easily project color-coded--to double their efficiency!