These holsters are fit to carry the Range Cards (basically pads of report cards) for US-based Motorcycle Instructors. So the market's relatively small that hasn't stopped them from being a semi routine item. I think my favorite thing about these holsters is every instructor puts their own style on them. This client wanted the logo and a pair of pencil sleeves. I hadn't done pencil sleeves in awhile but some careful engineering and some deerskin made for a great result.