The Lumi Down that PK has on is more of a 2/3rds length style, definitely designed by Jussi Tarvainen to be baggy. The Saray Parka is a tad longer, not by much but has a little length on it. It truly is a parka length.
The best way to put the fabric is shiny but not OVERLY shiny, it is the same material on the Survival Suit which I am a huge fan of. I've seen it and felt it, which it's very sturdy, but the color rides the middle ground of being bold and shiny.
Here is the product shot for the Saray: