Kodak Double X is a classic black and white film that's usually only available in long reels for motion picture cameras- great if you're making a movie, not so great if you're just trying to take some pictures. Alberta's Flic Film repackages Kodak Double-X into reusable 35mm cassettes for use in almost any 35mm camera (as long as you can set your own ISO: the cassette is not DX coded)