Lomo’s awesomely handsome Belair camera has some retro-tastic styling, and a clever-and-classical bellows system to allow it to fold flat for your (oversized) pocket. The rub was that it used 120 roll-film, the kind used by medium-format cameras in the olden days.
120 is great, and the big negatives give amazingly sharp and detailed prints. But 35mm film is both cheaper and easier to process. To address this, Loma will now sell you a replacement 35mm back for your Belair.