If you like Xenoskin, the Xenoskin Zipfolio is amazing. I like it a lot. It's a binder, there's not much to say about it, it's attractive, the Xenoskin feels nice and looks good in black, the construction is solid and the zipper isn't flimsy or low quality. If I had to nitpick, I'd say that the Xenoskin can scuff or scratch easily if thrown in a backpack with other objects and won't wear as well as suede. The clear face of the pockets look nice but feel flimsy and I worry about tearing or creasing them, though that has yet to happen, so they must be fairly sturdy despite their thinness. The black-backed pages themselves feel good, especially when fully loaded with cards. The 4-pocket version I have also cannot lie flat but the 9-pocket binder shouldn't have this issue. It's a much better binder than the old school clear Ultra Pro pages in a ring binder or the Monster binders that were hugely popular with Yu-Gi-Oh! players back in the day, which would crack and tear and didn't have zippers.

I purchased the Zipfolio a long time ago when their logo was still a muscular man spreading his arms, and the quality of the Xenoskin products back then was higher so the current production runs might not be as good. I know the new Sidewinders are a little larger and have some minor fit and finish issues like faint glue stains on the microfiber and loose thread ends, but in terms of protection and the general execution of the product, the quality is still the same.