Danny Andres wrote a review of Sierra Designs Stretch DriDown Hooded Jacket - Men's on October 15, 2013
Familiarity: I've used it once or twice and have initial impressions
Fit: True to size
I must say as a representative for Sierra Designs I am a bit spoiled by the amount of gear I get to try out, and sure enough every year I am stoked on the new product. This year is no exception other than this is by the far the best down jacket I have worn.
I got the chance to try this out last week during a cold snap in Moab. The first thing that is different is the shell and liner material it is a soft to the touch fabric which feels great against the skin, no more cold nylon. Secondly the entire jacket has stretch like your favorite softshell, so no more hindrance reaching for the beer on the top shelf. Thirdly is the warmth you have with this jacket, in order to make sure the down does not pop through the stretchy material we have placed an interior membrane in the liner, which cuts down on the wind blowing through and cooling you off. Then if that is not enough it is filled with 800 fill Dri Down.