I picked up this bad Larry in replacement of my 686 Limited Edition Times New Era Down jacket. The 686 was an amazing jacket, but the hood was really small and the cuffs around your wrists were a little tight, making it hard to squeeze your gloves under there.
The DC Stage 14 Down jacket makes up for everything!!! I'm 5'5" and went with the size medium. The fit is a little long and slightly bigger than my 686, but not in a bad way. This jacket is super warm, comfy, mad steezy, and has some real good features. Wrist gators are on point, cuffs are plenty big enough for any glove to go under, waist gator with belt snaps, mesh lined pit vents to dump the heat, and interior pockets/media storage is great. I haven't had a chance to put use into the Respirator Breathing System but it looks pretty awesome and seems like a good/high quality system, super soft and plush, and very breathable.
Really, the only thing I didn't like very much was the hidden neck pouch for the face mask. The mask kinda just sits at the bottom of the pouch all bunched up, so it feels like there is a lump on the back of your neck. If anything, just take the face mask out and you're all set. There are plenty of other pockets to put it in. Also no pass pocket or sleeve.