This is a one month follow-up from my previous review above. Over the last month I have worn this jacket almost daily in harsh Boston, MA winter conditions (snow, sleet, freezing rain, heavy wind & rain, etc.). The jacket has held up GREAT under ALL of those conditions. It is sufficiently windproof and water resistant. I am quite happy with it. As for overall durability, it has held up well so far. But, a month isn't really long enough to fully test long-term durability. That is something I won't know for quite some time.
Last, I have since realized that I should have ordered a size medium, not a size small. Overall, the jacket fits me great, aside from thing; the sleeves are a little short on me. However, that is my fault, so I can't complain. The web site lists the sleeve length on a size small as 28". For what it's worth, I measured my jacket from the cuff to shoulder seem, and it was 27". Overall, this seems to be a really good product considering how inexpensive it is.