Schiessjoppe (eyelet Doublet)
It has been claimed that the garment called eyelet doublet is not a form of ring armour, but an undergarment intended to be used under actual armour. The eyelets are intended as ventilation holes. It was known as a Schiessjoppe in Germany. However, Sir John Smythe, in 1591, recommended that, "Archers should weare either Ilet holed doublets that will resist the thrust of a sword ot a dagger and covered with some trim and gallant kinde of coloured cloth to the liking of the captain........or else Iackes of maile quilted upon fustian." It is clear from this that Smythe's "eyelet holed doublet" was not intended to be worn with mail but as a standalone armour, but this quote from the book titled "The Armourer and His Craft" By Charles John Ffoulkes brings into doubt whether the eyelet doublet was related to ring armour at all.
"From the nature of their composition these "eyelet doublets" are rarely to be met with. They were made of twine or thread knitted all over in eyelets or button-holes. The appearance is much the same as modern "tatting" and macramé work."
Read more about this topic: Ring Armour