Julian B.wrote a review of Patagonia Alpine Houdini Jacket - Men's on August 28, 2015
Familiarity: I've put it through the wringer
Fit: True to size
This thing is crazy lightweight and packs down to fist size! I recently bought this for an alpine trip to Tuolomne and the Sierras and ended up getting caught in a torrential rain/hail/lightning storm while climbing an easy multipitch in Tuolomne. We had to bail off some gear (we got it back the next morning). I was already drenched and getting pummeled by hail in a tshirt and popped this jacket on and immediately started to feel warm again (wet but warmer). It offered little protection against the bullet-fire hail, and the rain was too much for it to keep me dry BUT it did keep me warm...er than I would have been without it, and for a lightweight alpine shell that's what I was looking for.
I then used it as a windbreaker the next day (nice and sunny) and it performed better than expected. It breathes decently but does build up some inside moisture if mildly humid / or if you're sweating.
This is going with me on every trip from now on.