Montbell Ultralight Down Pant

Priced: $144.95 - $145.00 Rated:   - 5 stars out of 5 by 9 reviews.
Montbell Ultralight Down Pant
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Color: Charcoal Black
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Montbell Ultralight Down Pant -
Round out your winter mountaineering kit with a down jacket and the six-and-a-half ounce Mont-Bell Ultralight Down Pant packed with 800-fill goose down. Montbell used highly-packable insulation and compressible shell material to craft these insulated pants, leaving you little reason to leave them behind when the weather hints at sub-arctic temperatures at night. Rather than carrying heavy fleece pants, or simply going without, treat your legs right, because after all, you're going to need them to get home.


  • Sewn thru construction
  • 20-denier rip-stop nylon
  • Single-quilt construction reduces weight and stuffs easily into your pack or pocket
  • Ballistic Airlight nylon shell means durability and packability without a weight penalty

Wash and Care:

  • Standard 25-wash rated DWR treatment


  • 800-fill goose down means lightweight, highly-packable insulation that lofts easily after being pulled from your pack

Weather and Wind:

  • Polkatex DWR coating repels light moisture and precipitation outside


  • Zippered fly with snap closure


  • Stuff sack included
  • Elastic waist with draw cord

This family of products continues to delicately balance the characteristics that define reliable ultra-light apparel. For example, the 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.

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Average Price History: Price History
Review RatingNumber of Reviews
Compressed Size:4.3 x 7.3 in
Fill Weight:2.0 oz
Insulation:800-Fill Goose Down
Weight:6.1 oz
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Montbell Ultralight Down Pant Reviews:

Positive Reviews:

Just got these. Wanted down insulated pants for hunting in Michigan, and to pack up small on Colorado elk hunts. Haven't put these through the ringer yet, but they fit well, and seem to be made of decent quality. Can't really beat these for the price--most other down pants options are twice the cost of these or more. Not too baggy, but not too tight such that you can't fit a base layer and midweight layer underneath. They feel very light (in oz weight, not warmth), and they pack very nicely in the included drawstring stuff sack. I'd penalize a star or two ONLY IF these were priced much higher than $175 because these are relatively simply designed, they are not very technical, and corners were certainly cut in regards to quality (e.g., stitching); HOWEVER, for the price, they deserve all 5 stars for value upon first glance and trying them on. I will update this review after the hunting season, and perhaps also after this winter.
UPDATE> Wore them weekend of 11/23/2013, while hunting (sitting still for 4 hours) in 13 degree weather, and they kept my legs toasty!

Lamarsh at on 10/30/2013

A great second layer in a sleeping bag to get added warmth. They have saved me the expense of purchasing a lower degree bag. Using these pants, a Patagonia down jacket, homemade down booties, and Neo-air mattress, I was able to get 15�more degrees out of my 35� Western Mountaineering Highlite bag . Incorporating these pants (as part of my ultralight pack) has also allowed extra/multiple uses as well. They are great for lounging around cold mornings prior to packing up. They fit well and pack small. I also keep them handy at home as they are great for getting the morning paper!!

grep831809 at on 12/10/2013

I'm 5'9" female. I love and reach for these all the time. They are definitely among my top favorite outerwear purchases this year.
I think Montbell is a great company and I look forward to their future. I've read some dissatisfied customer complaints about their ultralight down jackets shedding the moment they get them. For as often as I've used these in a month, I have not noticed a remote problem.
Pockets would be nice but i'm not resentful. Pockets are just nice on everything.. next generation maybe :)

bellisimoma at on 01/20/2012

Light and Warm

I use the Mont Bell Ultra Light Down Pants to extend the temperature range of my sleeping bag, sitting around the campfire on a cold night, and as a mid-layer. I recommend wearing a pair of wind pants over the MB Ultra Light Down Pants for added protection against dirt and abrasion. These pants are extremely light and pack well.
Dr. G at on 01/01/2012

I needed something to wear for sleeping in sub freezing weather, in combination with a down quilt. Worn over the lightest long underwear bottoms, these Montbell U L pants are great, just what I wanted. Maximum warmth vs. low volume./weight. One of the very few items I'm willing to pay full price for.

psyp339711 at on 01/16/2014

These are great for throwing on under a shell when its really cold, or for lounging around camp at the end of a day well spent. Super light and a great way to add some degrees to that shoulder season sleeping bag. Wish the had elastic at the ankles.

knanier at on 08/22/2013

Warm as toast!

When the cold weather shows up,I get out my UL Down pants.If nothing else to wear around the house other than turning the heat up.When I go camping in the winter,them and a pair of long johns is more than enough to keep you toasty warm.
HikerMiker at on 08/08/2012

i wore these under bibs for months on end and they are a great extra layer. in super cold climates a little down goes a long way! they fit with a very high waist but helps to keep everything tucked in under gear.

mikp50929 at on 10/26/2012

Negative Reviews:

These pants may contain high quality down, but there sure isn't much of it. I can't imagine these providing any more warmth than a good pair of thermal underwear. There are two important metrics in evaluating a down garment. "Fill Power" is the quality of the down based on loft to weight ratio. The other number is "fill weight." This is the weight of down actually contained in the garment. MontBell does not provide this number, for reasons that are now obvious. I suspect this garment contains less than an ounce of down. Western Mountaineering provides both numbers in their specs. If you are looking for warm down pants, you should consider their Flash or Flight pants, available at

Skidah Powdah at on 11/14/2013