rpg
Doublet, Arming
Terminology is a little tricky here, while ‘Coat Armor’ is just a vest, the ‘Arming doublet’ is actually a long sleeved coat with some sections of mail embedded to protect weak spots in the armor worn over it. This makes very effective under-armor for plate harness, granting +1 Bypass when worn in conjunction with plate harness (in lieux of a gambeson or aketon). Medium or full armor which incorporates a gambeson can be fitted out with an arming doublet as an alternative for an extra cost, this would confer an additional +1 Bypass (no DR bonus).
Panoply, Cuir Boulli Lamellar
Lamellar was by far the most common form of leather armor. This was the most ubiquitous and arguably the most effective form of leather armor used historically. Fairly flexible and relatively good protection. Plus it floats.
The first row represents the protective quality of the Helmet or the lamellar brigandine over the gambeson, the second row represents the protective quality of the gambeson alone. See Armor Table Key, Layered armors for more about how this works.
Plackart, Iron
Also placard, planckart or placate. A component of plate armor, usually iron, shaped to cover the abdomen. It was popular in the 15th and early 16th Centuries.