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The Mountain Hardwear Nitrous Jacket brings the awesomeness of down even in wet, damp weather.

You love down, but high humidity or permeating moisture can turn its fluffy warmth into a useless pile of fathers. Fear not, the Mountain Hardwear Nitrous Jacket uses water-resistant down to push back against the effects of moisture. The 800-fill down's Q Shield treatment infuses each fiber with a permanent water repellent to help maintain loft and warmth retention even in moist, damp conditions—you get the awesome warmth-to-weight ratio of down without its normal susceptibility to moisture.

Traditional horizontal baffling across the lightweight 30D ripstop holds the Q Shield down in place, and dual hem drawcords team up with full elastic cuffs to seal out cold air. Compressible design means the entire jacket fits neatly into one of the hand pockets so it's easy to haul and easy to pack.

  • 800-fill Q Shield water-resistant down
  • 30D ripstop
  • Compact, stowable design
  • Elastic cuffs & dual hem drawcord
  • Two front hand-warmer pocket

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Review Summary
4 4
2 3
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Mountain Hardwear Nitrous Jacket - Men's

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Here's what others have to say...

2 5

Not what I expected

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: True to size

Received this jacket and my husband tried it out. Not very warm even though he was wearing a long sleeve shirt and it was only in the mid forties. The jacket fit true to size but the neck was very tight when he zipped it up. Also, it appeared that most of the chambers had very light down in them. This was his first Mountain Hardwear Down Jacket so not sure if that is the way they are made. Sent it back for an exchange to get the Montbell Alpine Down Light Jacket. Based on his impression, can't recommend it.

5 5

Best Jacket Ever!

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

I hate puffy jackets, always have, but then I got this one...this is now my favorite jacket of all time! Packs down to nothing, weighs nothing, keeps me nice an toasty and looks fantastic. Bottom line, this jacket is awesome, buy it and you will not regret it.

5 5

Mens Nitrous Jacket is the real deal

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

I bought the Nitrous a couple months ago, just as it started to get really cold here in IL. I am 6'7 /285lbs and bought the XXL as you might imagine. Jacket is the perfect length in the arms and torso, which is where most jackets fail me on fit. Its incredibly light but does a remarkable job blocking most of the wind. I would say its comfortable, with a long sleeve shirt under it, down to about 20-25 F especially if you cinch the waist cord- which is a definite plus on this jacket. I've been very impressed overall. Its my pretty much every day winter jacket now.

5 5

Best Down!

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

Warm, light, packable, perfect for cold winters!

4 5

First Down

  • Familiarity: I've used it several times
  • Fit: True to size

This is a great jacket. Very lightweight, packable, and warm.

5 5

Great product

  • Familiarity: I've used it several times
  • Fit: True to size

Nice light weight jacket with excellent weight to warmth ratio. Very packable. Over all fit is great and fairly true to size. I'd say the body of the jacket is good but the length is a little long for my taste. Though it does fit me well (I'm 6'4" and 190lbs).

Responded on

What size did you get?

4 5

Light Weight Down Jacket

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: True to size

I was comparing this jacket to The North Face Thunder Micro and the North Face was the one I ended up keeping. Both are 800 fill but the Medium Thunder Micro fit my 5' 8" 150 pound frame just perfect. The Thunder Micro also had more pockets and just looked better.

The Shark grey is a good color but the zipper is BLAZE ORANGE in real life. The pictures don't do this obnoxious colored zipper any justice. The cuffs are the same blaze orange color. If the orange was a bit muted like a burnt orange, this jacket might have had a spot in my closet.

Responded on

Interesting; I posted a similar question on the Backcountry TNF Thunder Micro page asking for comments on TNF Thunder Micro vs the Mountain Hardware Nitros Jacket. As you posted, both jackets use 800 fill down and both are super light and provide a lot of warmth ? I?ve tried them both too... However, I am 6?3? with athletic build (215lbs) and I typically purchase large jackets. Lately as TNF Jackets have moved towards the ?vanity? sizing? they seem to be fitting for the masses. That is, per my height/weight, I wear a true large and NEED the longer sleeve length (but not the extra belly room?). That being said, I choose the Mountain Hardware Nitros Jacket, Large in Collegiate Navy, because the Large fit my chest and the arm length was just that much longer to fit my arms. Plus I liked the Collegiate Navy color scheme and this year?s Nitros is fitted with Q Shield water resistant down. On me, TNF arm length was an inch or so shorter in a Large, which didn?t fit me ?. My take away here is both jackets have the same 800 down fill, but one may fit better than the other? Nitros fits me best. So Try them both, pick what fits.

On a side note, I do have the Mtn Hrdware Quasar Insulated Pullover in Shark color which has the Orange accents ? and I love this bulletproof pullover for snowboarding/snowtubing?