Saddle Up With Our Summer Adventure Guide—Shop Now
Home Page

Detail Images

Current Color

Western Mountaineering Flash Down Pant - Men's


Flash Down Pant

It's hard to recover completely at basecamp when the frigid temperatures keep your legs shaking, unless you brought the Western Mountaineering Men's Flash Down Pant with you. With 850+ fill goose down insulation warming your lower body, you get the utmost recovery possible for the remaining ascent. And there's really no reason to leave it at home, because this pant weighs less than half a pound and compresses down to half the size of your water bottle.

The Flash features an adjustable belt that cinches across your waist comfortably, and the elastic ankle cuffs keep the pant in place and seal out that freezing air. Western Mountaineering reinforced the seat so you can sit on your ass as long as you need until your restful recovery is complete.  

  • Poofy down pants crank up the heat when out in the freezing temperatures
  • Lightweight nylon ripstop for durability and packability
  • Warm down comforts after a cold day of alpine quests
  • Compresses down to half the size of a standard water bottle
  • Adjustable waist belt dials in the fit and elastic ankle cuffs seal out drafts
  • Item #WES0058

nylon ripstop, water-resistant coating
850-fill goose down
Fill Weight
adjustable belt
Claimed Weight
Recommended Use
alpine & expedition
Manufacturer Warranty

Tech Specs

What do you think about this product?


>Rating: 4


I've used it once or twice and have initial impressions
Runs large
Size Bought
6` 2"
200 lbs

These run really long I I am normally in XL but I ran the medium with these and they are still long. They are much puffier than they appear to be in the photos. And I think if they where stretchy they’d be an incredible Pant. I do not like how shiny they are. But they’re definitely warm and cozy I don’t know that they are great for sports because they are so puffy and they’re not stretchy material. I think they’ve almost got an incredible product Here and they just need to refine it a little bit more.

>Rating: 5

Super light reasonably warm

I've used it several times
True to size
Size Bought
5` 5"
95 lbs

I got these size XS for my petite and desperately cold hardcore backpacking wife. They pack down to nothing and weigh about the same as air. They make it possible for her to spend some time outside of her sleeping bag in the evening when we are camping at high elevations. She usually wears them under some XS Arcteryx rain pants and the down fully lofts.

>Rating: 5

Shiny and puffy

I've used it several times
True to size
Size Bought
5` 6"

Best over all pants. If you love there sleeping bags why not look into keeping your legs warm. It’s best over all. Great made and good workmanship.


Western Mountaineering Flash Down Pant

The Best.


Pants Down The Best.

Wherever you are, whenever these pants will warm you! I recommend this, super lightweight and very warm!


Nice photo Humberto !!! I selected this image to feature on the homepage of in our Activity Feed! Congrats on being GOATWORTHY !!!

Thank you Lexi Dowdall.


Great Pants down.

Beautiful and Confort.


My new Pants Down Western Mountaineering

Western Mountaineering,'m loving this set, they are perfect for using on the coldest days, even being here in Brazil, loved too! I hope to soon be able to purchase more products from this store! Thanks Backcountry


Thanks Humberto!


Is this pants zip front. I am looking for down pants for my father. Thanks!


Are these full zip (legs) pants?

Are these full zip (legs) pants?

Hi DD_Seattle, These pants do not have zippers on the legs. Western Mountaineering makes another pair that does, the flight down pants. Check them out here!