This 10 in 1 Lens Filter Case from K&F Concept is a good solution for storing lens filters. The hard shell has a little bit of flex while being firm enough to provide good protection. The interior envelopes feel like soft suede and the compartment dividers form a buffer between filters. Opening the case makes it fan out like an accordion until the case lays flat allowing a good view of the filters, making it easy to grab the one you want.

The slots nearest the case shell are larger than the others. I have a magnification filter that's wider than the .25 inch max specified, and it fits well in one of the larger slots. But with that thicker filter stored inside, I can only use 9 of the 10 slots and still be able to close the case.

The product title claims that this is waterproof, but the description is more accurate: "protects your filters from... water splashing." The outer material is absorbent; water does not bead on the surface like waterproof material would. The fabric on the inside of the shell also provides a little bit of a moisture barrier. The zipper is hidden when the case is closed, which gives additional dust and water splashing protection.

This might seem pricey at $20, but is worth it for me because of how protective and compact the case is. It's a much better solution than storing my costlier filters in their plastic cases which ends up taking up a lot of space in my gear bag. For my use, it's a good value.