Why did you have to test it indoors, Levi. it's the least he can do man that was a nice wall you had there

But TJ's a cool guy. Armin will explain that it's equipment designed to facilitate movement in a three-dimensional space via a system of wires and air propulsion. Good for fighting, good for running away really fast.

Basically, TJ, it makes you Spider-man. If only Armin could use that analogy.