arming doublet (southern cross)
For arming doublet of the 15th century, use gambeson. See also its wikipedia article.
A fictional type of advanced military body armor from the Choujikuu Kidan Southern Cross mecha anime series from the 80s.
The Arming Doublet is a type of modular, personal hard combat armor used by the different units in the army of the Southern Cross to defend the civilian population of planet Glorie.
There are several many types of customized Arming Doublets and each one is used according to the army unit that employs it. They can function as spacesuits, pilot suits, diving suits or even desert and cold weather operation suits. The shape of these armors also changes depending on the gender of the users and their body type.