The perfect extra layer for those cold desert mornings.
Very breathable. No problem in light rain. Have not tried it for heavy rain yet.
I got it delivered before a trip walking around Manhattan, with regular temp changes, and a few days of wind and one of strong rain. Performs well, and precisely as described. It is not a full-on storm or thermal jacket—-but enough to get you across the island. Most importantly, goes into a sufficiently small package that it always fits into a shoulder-pack crowded with computer stuff, subway maps, etc. Brilliant yellow much appreciated in thick traffic.