I have used this rain jacket twice now.  I live in Amazon's home City where we have a lot of rain, and above normal this year. I walk my dog daily, rain or shine.  The first test was during the day, on a rather warm, humid day for the PNW in Feb.  It was rainy, varying from heavy to mist, in the mid 50's.  I walked for about 4 miles through woods and trails, and sidewalks, up and down hills,  So I worked up some sweatt.  I had a sweatshirt on under the jacket.  I ended up a bit damp, so was a bit concerned about the 'waterproof' part of this jacket.  But figured it could very well be due to it's not exactly breathable material, although it does have venting under the arms.  Tonight I gave it another test.  It was raining fairly steadily, not pounding, but a good steady rain, with temps in the low 50's.  I stayed on the street so wasn't working so hard that I sweated much.  Had the same sweatshirt on underneath.  After an hour I was dry as a bone.  The jacket (XL) is roomy enough that I could easily wear my heavy jacket under it. I am a tall woman, yet the jacket comes down to just above my knees so kept my upper legs dry just fine.  I will wear this when I go to our farm, while cleaning stalls, moving the horses around, feeding chickens.  I think I'll be dry, although will need to see how tough the material is.