@aa There is a wealth of journals/planner covers for the traditional Field Notes notebooks (3.5 x 5.5"), but almost nothing for a similar A6 (4-1/8 x 5-7/8") or standard 4 x 6" index cards which are incredibly close to the A6 size. I'm looking for something simple in the vein of this leather wallet-like cover that would accomodate something of these sizes. The A6/4x6" format is still just small enough to fit into most coat pockets as well as rear pockets and a cover that would fit them could also be marketed to fit the slightly smaller 3.5x5.5" notebooks as well. I think that one product could cover the whole space. Another similar example, although canvas of the smaller format is Lochby's Pocket Journal.