From Anno Astra
Late Generation Powered Suit
The development of reliable neural-inductance systems was as much a breakthrough for powered suits as they were for mobile suits. By responding to nerve impulses emanating from the brainstem detected via a special 'collar,' the musculature of late-generation powered suits was able to respond almost instantaneously to the wearer's actions. In addition, much as with mobile suits, tactile feedback from the suit's outer sensor layer could be fed directly to the brain via the same nerve pathways. Instead of a crude mechanical analogue, the wearer 'feels' whatever the suit does, although not in the form of incapacitating pain. The elimination of the inner sensor layer as well as further advances in materials technology would result in a slimmer, more compact suit, more flexible and easier to handle, making late-generation models more suitable for a greater number of roles.
Note that Powered Suits are usually covered with a tough, flexible synthetic fabric (much like an overall) for added protection against dirt and the elements.
Design notes: The design is a homage to the Orc suit used by Deunan & company in Appleseed III.