Montbell Men's U.L. Down Jacket

Priced: $154.95 - $155.00 Rated:   - 5 stars out of 5 by 17 reviews.
Montbell U.L. Down Jacket
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Color: Pure Indigo
Available Colors:
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Montbell U.L. Down Jacket -

Mont-Bell's U.L. Down Jacket weighs less than most cotton T-shirts, blocks a deceptive amount of wind, while compressing to the size of a 32 ounce water bottle. Specifically designed as a replacement for the heavy and bulky fleece garments used by many backcountry enthusiasts, the U.L. Down Series is “what you need” when warmth is critical, minimal weight is paramount, and space in your pack is at a premium.


  • Single-quilt construction reduces weight and stuffs easily into your pack or pocket
  • 15D, Ballistic Airlight nylon shell ensures durability without sacrificing weight
  • 15D Ballistic Airlight soft, quiet nylon shell fabric provides more tear resistance than previous ultrathin materials and is highly wind resistant

Wash and Care:

  • 100-wash rated Polkatex DWR (durable water repellent) treatment to shed light moisture


  • 800-fill power goose down insulation (fill weight 2 oz.) for high warmth-to-weight ratio and compressibility
  • 800-fill goose down lofts easily allowing more body heat to be trapped between the feathers which keeps you warm

Weather and Wind:

  • Polkatex DWR coating keeps out all extra moisture trying to sneak in


  • Two zippered handwarmer pockets
  • 2 Zippered Hand Warmer Pockets


  • Stuff Sack Included
Designed to outshine that old, bulky fleece layer that you’ve been lugging around in your pack, the MontBell Men’s Ultralight Down Jacket weights no more than a T-shirt and packs up around the size of a water bottle.

Eastern Mountain Sports (EMS)
MontBell's U.L. (ultralight) Down Jacket is "what you need" when warmth is critical, minimal weight is paramount, and space in your pack is at a premium—it weighs less than most cotton t-shirts, and compresses to the size of a 32-oz. water bottle.

Fiber Content: 100% nylon.
Country of Origin: Imported

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Review RatingNumber of Reviews
Also available for: Women
Back Length:27.6 in.
Center Back Length:27.6 in / 70 cm
Clothing Fit:Regular Fit
Fill Weight:2 oz / 56.7 g
Hood Type:No
Insulation:800-fill goose down
Insulation Rating:Warm
Insulation Type:Down
Material:15-Denier Ballistic Airlight Nylon Shell
Packability:Highly compact
Pockets:2 Zippered Hand Warmer Pockets
Removable Liner:No
Snow Skirt:No
Stuff sack included; compressed size:4.3 x 7.3 in.
Waterproof Material:N/A
Weight:7.6 oz / 215.5 g
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Montbell U.L. Down Jacket Reviews:

Positive Reviews:

I did quite a bit of investigation before I purchased this product. I was looking to replace my heavy fleece to reduce my backpacking baseweight. I've had the chance to use the jacket on both short and extended backpacking trips and it has performed as I expected. I'm getting the equivalent or better warmth at less than half the weight. It works well for those chilly mornings and evenings.
I considered going with the extra light version but am glad I didn't because I find the pockets useful. I'm not too crazy about the shiny finish of the shell but I bought it more for function rather than style so I'll live with it. I haven't had any issue with shedding yet - only one feather that poked out and I used Mont Bell's suggestion of pulling it back into the jacket.
I'm 5'11" and 165 lbs and found the medium to fit me well. I'm able to wear a base layer plus wind jacket underneath with no issue. I like the snug fit as it helps to keep heat in.
Overall I'm very happy with this purchase.

bar100461762 at on 08/05/2012

This jacket is incredibly light and packs down to nothing. This is definitely not the warmest down jacket on the market and it's not supposed to be. Perfect for long backpacking trips and ounce counters. I can pretty much use this as a stand-alone warm layer down to about 40 degrees, and I layer it with fleece, wool, or a waterproof shell otherwise (it is great on top of my base-layer in the winter when moving around). I have worn it bushwacking and not had any tears or lost feathers, but I would be extra aware of snags in these circumstances as the light weight outer material feels delicate. I am 5'10", 165 lbs, and wear a small (form fitting). If I wanted to layer underneath it, I would have gone with a medium, but I tend to layer over it. I wish it cinched at the waist sometimes, but again, that would sacrifice weight. Overall, this jacket is a steal for the weight and warmth, and I get everything I need out of it.

Daniel Carolan at on 12/02/2013

Me: moderately fit, but kind of barrel chested, with a small amount of 'beer weight' :)
5'10" 185#, 42" chest, 33" waist, 16.5" neck, 72" wing-span, avg. torso length. Generally a 'medium' shirt size. At the recommendation of the MB size chart I purchased a large in primary blue.
I wrote a long review, but erased in favor of the TL;DR version:
My new go-to jacket- LOVE IT.
weight is very amazing
can compress to well under 1L volume (0.6L?)
Perfect for freezing temps
Layers well for colder
Quality construction
Stuff sack is stupid- jacket would easily fit in huge hand pockets, but not capable due to non-reversible pocket with single sided zipper pull.
Shinier than I'd like but not bad.
Blocks wind well, it holds its own, but it's not windproof. maybe on par with 'windblocker' fleece
Cut is generous- If seeking a close-cut 'over a baselayer only' insulation, size down. I have room for a 200wt fleece under mine (recommended size)
Edit: my Large weighs 241 grams (8.5oz) while in the stuff sack
Those are the big ticket things I noticed. overall, fantastic jacket.

COHiker at on 02/29/2012

It's a great garment, but my wife's Fall 2011 version came with a nicer interior (different color than the outer shell color and interior drop pockets).
Same great quality, loft, warmth as previous versions. However, I was hoping for additional 'storage space' (i.e. interior drop pockets). I assume MontBell wanted to cut down on weight/packing ability by not including this added material (?)
6'2" and 170lbs.: The Large flared out at the bottom a bit. This obviously won't matter when wearing it under a hard shell, but might get drafty on it's own.
I'm glad I decided on this 'less expensive' version of MontBell's down jacket lineup compared to their Ex.UL Down Jacket which was significantly more expensive and didn't even drop below my belt-line when worn with a T-Shirt underneath (size Large).

sra4367825 at on 03/15/2012

great jacket but runs small

It's a really nice jacket, amazingly light, but the size runs small. I bought one last year and had to return it. Generally, for most brands my size runs more like a large in the chest and more like a medium in the arm length, so sometimes a large can have arms that are way too long and a Medium can be not quite as roomy as I would like in the chest. I bought a medium in this jacket and it was tighter in the chest than any other medium I have tried - I had to take a deep breath just to get the zipper up.
Dr Phun at Eastern Mountain Sports (EMS) on 10/10/2012

I also have a Patagonia nano puff and a Outdoor Research down sweater but this is the one I grab the majority of the time. Went on a long snow shoe trip last weekend in 15 degree weather. Wore a long sleeved t-shirt and the MontBell and was perfectly warm, even unzipped the jacket several times during the day. It's super light weight, form fitting and very wind resistant. I'm 6'1" 178 lbs and the large fits perfect. Highly recommend.

jgnp1045307 at on 01/14/2014

In the late summer and fall, I wear it alone as a light down sweater, in the winter I wear it under my shell for extra warmth. It is crazy light has a great cut and looks good all by itself. I have had it for over a year and have had now issues with leakage. It isn't the warmest jacket, it is light lightest. That is sorta the point.

Robin Sherwood at on 01/20/2012

Bought this for my Dad for Christmas. What a perfect gift seeing that he loves down jackets! He is very happy with it. Said that it's slim enough to layer easily, yet extremely warm. That's about all I'd need to hear to be convinced to buy this awesome jacket! Been chilly lately? Look no further. The answer is right here.

Robert Mowery at on 01/19/2014

Love this jacket. Has a better cut and feel than the Patagonia down sweater - feels a tad bit warmer as well. The Paprika is a much better color than the photo would indicate. I layer an Arcteryx Beta SL (3 seasons) or Beta AR (winter) over it. 6'3" and 210 lbs - XL is perfect.

cosmicgumby at on 11/13/2012

Great jacket, nice and warm. It seems to fit true to size. I haven't had long enough (just a couple months) to speak on the longterm durability. But so far it's great. No feathers coming out as of yet.

wilp719983 at on 10/21/2013

Neutral Reviews:

pros: very light, packs down super small, great for insulation on day hikes.
cons: not warm enough for nights camping in fall; definitely inadequate <30f; low fill wt - only 2oz - so though it is 800 fill, there is not enough of it to give adequate loft. my marmot wind shirt is way warm and still my mid layer for ice climbing.
only get this jacket if using when >30f

senp361133 at on 01/24/2013