I bought these after my movie collection outgrew a large bookshelf and couldn't be happier.It's hard to tell in the photo and description, but each DVD sleeve is actually two parts.There's an insert (that includes two slots for DVDs) and then a "pouch" that you slide the insert into. The pouch has a flap that completely covers the insert, so there's no chance for dust to get inside. Presumably, you can also put liner notes and that kind of thing inside the pouch.The plastic used for both the insert and the pouch is pretty heavy and doesn't feel like it's likely to rip or tear.
The DVD binders and refill pages save a ton of space, plus when the kids visit their grandparents they can take a 'book' of their favorite movies for the trip and it works great! It was wonderful to clean out the DVD cabinet and replace two linear feet of shelf space with one 2.5 inch binder.