In October, Infinite released their first set of star cards. This is volume 1, so I'm expecting plenty more in the future! The collection card set (which I reviewed here) was released along with a binder to display the cards.
This 3 ring binder is actually quite small compared to normal 3 ring binders. The rings are 1 inch in diameter, which is only enough to fit one collection of cards (meaning another binder for the next set). The binder is about 10.25 inches by 8.5 inches by 1.625 inches.
Here you can see how much room there is once I put a card in its sleeve.
Overall, I really like this binder because of the quality. Also I like that the sheets of paper provide images of how each card is supposed to look like, because I know I won't be able to collect all the cards. However, I don't think this binder is worth the 38000 Won, but to support Infinite, I'm okay with the price.