What is this? Is it LEGO? Dark Green, detailed mouldings, roughly trapezoid shaped I've been sifting through a few gifted bins of LEGO with a small percentage of trash and clone-brands stuff.  I've had pretty good luck with finding new and strange LEGO pieces on bricklink, but this one has me stumped.



I don't see LEGO printed anywhere on it.  Another discouraging factor is on the bottom where I see numbers that would suggest it is not LEGO:



But it fits Technic pins perfectly so maybe it is something LEGO that I've never seen before:



So have I been lured in by some clone part or is this a real LEGO thing?
That's LEGO piece - 47299 - Bionicle Toa Metru Knee Cover. You can see © sign in LEGO font as well as "47299" part number on the bottom, both of which confirm this is legit item.