True, I just don't know it. I've read about the flexibility thing, but nothing much about usage. I do remember at some point seeing one with a somewhat similar cross cuts on the surface. Unfortunately I can't remember that much about it, I guess I haven't paid that much attention to it. Diamond cut is something familiar to me (again done on the back for flexibility and softness), but this one had the "cuts" on the working surface and much bigger. Maybe someone knows the manufacturer. Now this bugs me quite a bit.

on this clip I always missed the fact that no reference was made about the back of the strop. This is also a DD and by the looks of it, with a similar finish like the one above, even if in very poor shape.