In the image, Amell is wearing a wrist band and knee bands with glowing blue lights at their center, and a black glove. It's possible that the bands are some sort of technology upgrade from the ArrowVerse's latest costumed adventurer, the Atom. Since the Ray Palmer made his debut last week as an official superhero, it's not a stretch to think that he might cross paths with Oliver soon, and pass a gift to Starling City's hero.
Or, the tech might hail from Central City. As last year's Flash/Arrow crossover established, STAR Labs' resident scientists Cisco Ramon and Caitlin Snow are eager to help The Arrow with as many upgrades as possible.
Then again, maybe the equipment has no link to the DC Universe, and is simply some sort of motion-capture technology. Perhaps Oliver will go through some physical alternations that can only be realized in the post-production phase? Let's hope they're not lopping that hand off.
Check out Amell's full post below.
Arrow returns to the CW on March 18th at 8:00 p.m.
What do you think Amell is wearing? Share your theories in the comments below.