i had been on the hunt for a liner for a bit. found this one inside of a cold weather parka and then did the following modifications:
removed pockets from parka and sewed to liner (pockets are lined with cozy wool fabric)
removed zipper from parka and attached upside down so I can adjust however much I want the lower half open
added vintage laundry pin that dangles and opens the collar. I can also pin the top buttonholes together and not zip it at all
added the banana patch that got me (smiling)