Bump and i just did a bit of research and apparently it's primaloft so perhaps i was to hasty in my shunning of north face and apparently it has the fill power of 600 fill down i take this with a grain of salt, but if it's true why has primaloft given it soley to the north face, but bad news with it is that it dosnt compress well when wet.
I tested it.....very warm. I have first hand experience with Primaloft and love it. My issue with the jacket is that the shell fabric is very thin. A light shell over it would solve the issue. Rock and Ice compared 5 different light insulating layers and the Thermoball jacket reviewed the best and was actually the 2nd LEAST expensive. Packs down to the size of a tennis ball. Doesn't lose insulating capability when compressed, so pack straps won't let air in around shoulders. Don't write off every TNF piece.....there are good things they make,
I would love to see an equivalent of a DAS parka by the north face now they have this super synthetic, also just looked at the prices (£140) and might just get my self one being in the uk which as you may know is an extremely wet country so seems just perfect.