Hello all. I am new to this all, have never had much use for sheath knives until now (never went anywhere without my 3" pocket clip folder since at least the year 2000 though), and I just got a very lovely Buck 119 Special. Only I just noticed that there is a thin black plastic insert folded inside the sheath. The knife fits in fine and removes easily no problem. Is this something that is supposed to stay inside to protect the leather, or is it just a disposable insert they put inside to make the leather keep the proper shape until sold? It would make more sense as far as protecting the sheath if the only area that was NOT covered was the cutting edge. I also worry that the tip of the knife might slip between the plastic insert and the inside of the sheath when I go to put the knife away. I have a hard enough time re-sheathing fixed blades as it is; I'm just not used to it. Anyway, I can't figure it out. It's cheap and thin looking enough ,with a "made in Mexico" sticker that it looks like it MIGHT be disposable packaging, but at the same time it's just rugged enough and looks correct enough sitting inside that it might well be part of the sheath that I'm supposed to leave in there. I probably won't use the knife much, but I don't want the blade discoloring because it contacted the leather (although I hear you should never store knives in the sheath anyway, right?).