Dual Grav Suit
Finally something cool for humans! This is a dual grav suit, which is powered armor designed for humans living on the Split Horizon, an orbital colony located in the inner belt of the yinrih's star system. Its most notable feature is the caudal prosthesis, an artificial tail emerging from the middle of the suit's back (rather than the base of the spine as would be expected). It's meant to tether the center of mass to paw cables and tail bars designed for vulpithecine use. The Dual Grav name comes from the fact it's designed to be equally effective in zero G and the centrifugal gravity of the Split Horizon.
The caudal prosthesis works like an octopus tentacle. The human gives a small embedded AI general directions like "grab this" or "anchor me here" and the tail interprets the commands and takes care of the specifics.
The hand print on the pauldron is meant to evoke the red ochre hand prints left by stone age humans found in caves around the world.
Also, when not in use, the tail is coiled into a disk shape and acts like a shield for the back. The tail is probably also equipped with doctor octopus like grabbies on the end that can fold together when not in use so the tail can act like a yinrih's prehensile tail when operating equipment made for yinrih.