I've know of the period use of the "portapiece" on jacks, gambesons, cotuns, and aketons for some time now but most if not all coats I've seen for sale lack this defense to the thrust though the gap where your coat points, buckles, or laces close.
Since my group stopped doing free play a couple of years ago while we relearned a new core to our longsword, I never got around to making myself a "portapiece" for my main freeplay coat. Now that we've restarted, I'd forgotten my planned project...
Well, until Matt Cacy gack'd me though the gap 3 weeks ago with his Albion. :eek:
So without further ado, a simple "portapiece".
The coat turned inside out to show the added defense.


Since I've never mastered a sewing machine all work was done by hand. I used a stout waxed linen leather working thread to attach the piece with a tight whip stitch. 90ish percent of the "gap thrusts" seem to flow from the right to the left so I attached the "portapiece" on the left side of the coat.
If you make one to match your coat, you can just use multi-layers of linen or a padded shell. you can attach one with points on the inside of the coat, whip stitch it to the liner, button it, or attach it by matching it to a quilted seam on your coat and stitching it though all layers.
Matching linen can be bought cheap on line.
What the coat looks like with a matching "portapiece" from the outside.

In use the coat would be pointed shut.
Cheers,
David