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The fully waterproof Mountain Hardwear Effusion Hooded Jacket keeps you druy without weighing you down. At just 353 grams, this is Mountain Hardware's lightest waterproof 3-layer jacket. So, stuff it in your pack and be gone with having to worry about a sudden rainstorm.

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Not waterproof, but good lookin'

  • Familiarity:I've put it through the wringer
  • Fit:True to size

So, I bought this jacket for a week long fly-fishing trip in Alaska, where it typically rains on a daily basis. I was super amped on the price and proposed waterproof ratings, but extremely disappointed when after the first day of use, it wetted out BIG time. like, I had a beanie in the "fully taped" jacket pocket, and it was literally dripping wet when I pulled it out after a fairly light fall of rain, which led to a long, cold, wet day. If you're looking for a rain jacket, look elsewhere. I'll give it 2 stars because it looks good and is super light.

Not breathable in the least

  • Familiarity:I've put it through the wringer
  • Fit:True to size

I'd have to agree with the "nice looking plastic bag" comment. Except its also not waterproof. Basically, I'm not sure what you would actually want it for. For the price, go buy a rubberized rain coat (waterproof) or six and a cotton hoody. You'll be better off (joking, but only slightly). I've tried it in every condition that it could be used for and not found it worthwhile to pack, ever.

I got mine as a replacement for the Mountain Hardwear Transition T (discontinued). That jacket was worth its weight in gold. After 4 years of wearing on long trad routes, biking to work, and trail runs, it never let me down. I wish they would bring that back and get rid of this new version.

One star because if you do buy it, at least its lightweight.

Very nice looking plastic bag

  • Familiarity:I've used it once or twice and have initial impressions

Does not breath at all. Not for running or aerobic activities.

Thanks for your comment Clark. I just wanted to pass on the breathability and waterproof-ness numbers for this amazing knit stretch fabric other wise known as DryQ Active. I realize this has not been your personal experience but contrary to your belief is does actually breathe. Anyway, as tested by a third party lab the DryQ Active fabric put out a breathability number of 15,000 gm/m2/ over 24 hours and a waterproof rating of 20,000mm. Although that is not the most breathable or waterproof fabric on the market at 115 grams/per m2 it is the lightest 3-layer knit with stretch that is waterproof and breathable that we have ever made... and I would argue on the market period. Cheers!

Dry.Q Active breathes extremely well. I have the non hooded, older effusion power jacket, with the dry.q active panels and my chest/front never gets sweaty, even on 10+ mile runs. If I have my ID/debit card in the chest pocket blocking vapor flow, the cards get drenched, but the rest of my front is bone dry (proof that sweat vapor is going through the fabric).

Great Jacket, but...

  • Familiarity:I've used it several times

After months of looking at several jackets to wear in the late Fall, Winter, and early Spring months I selected the Mountain Hardware Effusion.

My 'must have' list included Waterproof & Windproof properties, slim/athletic fit, and my only 'want' list item included a hood. Other jackets that I looked at include: Patagonia M's Light Flyer Jacket (Gore-Tex, no hood $279), Arc'teryx Visio FL (Gore-Tex, no hood $299), and Mountain Hardware Effusion (Dry Q, hood $240). I was interested in the Effusion after seeing the sale price and researching the Dry Q fabric.

I was surprised at how light and thin this jacket is, in fair weather the jacket weight feels like a mid-layer and breathes like a baselayer. My first run in this jacket was during a snow shower with gusting winds. I wore a Smartwool Microweight NTS baselayer and was warm and dry during my entire hour long run. With the jacket zipped all the way up, the collar height is a perfect fit just below my chin and provides great protection. However, the hood does not tightly close around the sides of my head, just the top. Gusts of wind were able to blow snow past my ears, which would melt down the back of my neck. My biggest issue with this jacket is that the two hood aglets (black plastic elastic cord covers for the hood), pulled off the first time I put the jacket on and pulled the cord to tighten the hood. I was livid and discounted the value of the entire jacket. After looking at the aglet, I noticed that it separates into two pieces. I was able to re-secure the aglet to each cord end with ease; however, these plastic cord covers are cheap and not bombproof, which is how I would classify the jacket overall. See my attached picture for an example of where the aglet opens.

Mountain Hardware - use a knot, melt rubber, just change the cord covers on the hood cord because this is a great jacket that doesn't need discounted in customer reviews for the cheap method of covering the elastic cord ends.

Great Jacket, but...

I bought two of these jackets, one for me and one for my brother in law (a runner). Got them home, tried on the jacket with the hood as I wanted to test the different adjustments of the hood. The "aglet" on both sides pulled right off. Very close to returning both jackets!

FYI, very slim fitting jackets, very slim fitting. If you are between sizes, definitely order the upper size. I love the MH DryQ fabric, I have quite a few of these products from their top version of this (which I believe they call the professional? or Elite or Extreme??? can't obviously remember) to the standard as is used on this jacket. I like the DryQ better than the Gore material for warmer weather needs as I find it breathes better . . .