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I guess I might be asking for too much but I'm trying to find a very breathable, light, packable waterproof jacket. I'd like to be able to hike in ~75F rain while remaining relatively comfortable for less than 9 oz. in weight. I want to be prepared for something like a 15 minute pour.

I've been researching jackets for a couple days and I think I'm further from making a decision than when I started. I have an amazing 17 oz., 4-season hard shell already so I don't want anything like that.

In my research I've found that reviews generally cover experiences in cooler weather, but that doesn't help me since I'll be doing a multi-day hike in warmer weather. The reviews also tend to conflict. Any input would be helpful.

As of mid-2018, some good choices with pit zips appear to include:

  • Montbell Versalite
  • Marmot Essence
  • Patagonia Nano-Air
  • Outdoor Research Helium II (no pit zips)

Plus a bunch more that I read about, in addition to all the ones I'm sure are out there and didn't see. Is there any gear that would check these requirements?

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    breathable clothings work thanks to the difference in absolute humidity and temperature between the inside and outside. In warm environments during or after rain the difference will be much smaller than in cold weather, so I wouldn't expect any membrane to work very well (looking for vents/pit zips is a good idea though). I'm looking for a formula for calculating Moisture vapor transmission rate or differential pressure based on the temperature/humidity diff. - will post if I find something useful – robaki Jun 6 '18 at 7:13
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    It seems like it would be possible to word this question in a way that gives it lasting value. Right now it seems like it won't be relevant in 2019. – Don Branson Jun 6 '18 at 17:11
  • But - here's another question with a price shopping close vote, but there's nothing about price in the question. It's one of those things that makes me want to go, "hmmmmm." – Don Branson Jun 6 '18 at 17:14
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    @paparazzo - Interesting. Well, maybe dropping the word "price" would help. The description is well-done, though. – Don Branson Jun 6 '18 at 21:09
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    The point of the price discussion is that if the question includes it, then it should be closed, according to the close option – Don Branson Jun 7 '18 at 9:31

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