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For those who are serious about warmth.

You don't mess around when it comes to proper layering in the bitter cold, which is why the Arc'teryx Atom LT Insulated Pants fit the bill for your next sub-zero adventure. Extremely light and packable, these pants feature Coreloft insulation to trap your body heat without bogging you down with excess bulk.
  • DWR finish sloughs moisture to keep you dry
  • Articulated knees and seat allow for a more ergonomic fit whether you're sitting around the fire or trudging through pow
  • Full length separating side zippers means you can easily enter or exit the Atom LT pants even in a cramped tent or when you're wearing boots

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Arc'teryx Atom LT Insulated Pant - Men's

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1 5

tom2952697

Member since 

To me-these pants are useless.It may work for you - I hope.Sizing is good.I'm M (32")
Ok.
The good:
1)It is arc'teryx
2)Pretty good lookin pant,lightweight,comfy,exceptionaly warm to its weight just like the atom lt hoody jacket which I love and hate at same time because the lack of hood drawcord.
The bad:
-No side(hand) pockets (no big deal for someone)
-No back pocket( again-no big deal)
-1 kinda hardly accesible inside zipped pocket when worn.(I don't like it)
-These pant are made from very delicate material-there are no seat/knees reinforcement.
I don't think these pants will last too long even with minimal usage.
-PROBLEMS starting here:
-!!-Side zip- if you get really warm in these - there is no way you can use the side zip for ventilation(lack of velcro strap/snap button at the waist,also lack of second slider)
-!!-One zip slider only (at the bottom)This delicate slider is unprotected/overhanging the pant about 0.5 inch so if you step on it - you're done with the pulling part of the slider.(you better carry two paperclips in your pocket if this happen)

-I can imagine myself wear this pants in the cold(spring/fall) mornings preparing my coffee/hang in the camp.These pants are perfect for that. But if you need some more serious/technically featured pant - Go with M.H. Compressor pant!! Lightweight-but heavier than atom pant!
MH-compressor: seat+knee reinforcement/2zipped side pockets/2 sliders(at top and bottom)/2 velcro straps(at waist and bottom).These pants can be used for ventilation.You can pull zippers with your gloves on.Free stuff sack included. $29 cheaper and much ,much better. And they don't really look to bad at all!

These arc'teryx pant may really work nicely for someone.
For me,again- I don't see the point of the side zipper without at least waist velcro(also second slider needed).
If these pant are designed for: insulated pants are designed to keep you warm on the coldest days, or to be used as an extra outer layer during low activity moments in the mountains........Well for the coldest days you better have compressor pant on you-much warmer! You may be ok at 36F with an polartec layer in these.What is low activity moment in mountains?-Camping at snow,sitting on rock and enjoying view? Well-for camping at snow go with KAPPA AR but not Atom.Sitting on rock-you better have reinforcement seat.Finally- Once you cold - you cold,period. If you warm-you have a problem because you gonna sweat and these pants did not offer you any venting options.

I would not recommend this pant to any of my friends because lack of important features for "insulated-full zip" pant.

Sid Nitzerglobin

Member since 
Responded on

I think these are designed to be used as an efficient lightweight insulation layer under your outer layer/shell and over your base (or as you mentioned for temporary additional warmth during sedentary periods in otherwise higher output activities) rather than a stand alone top layer.

I can see how you'd be disappointed if you were expecting to use them as an outer layer.

tom2952697

Member since 
Responded on

Yes.they are designed for that and this is why they are useless.I rather have insulated shell with vents than outer shell and this under that shell.once you warm you need to get these pant out because you can't use the side vent.I contacted arcteryx and point out these problems to them.they are thrilled by them and they will not change anything cause they thrilled.while they beeing thrilled,I purchased diferent brand ones.I invest my money and compared mh compressor,patagonia pufflight,marmot(not sure with name),or(not sure with name) and I ended up with montbell thermawrap tec. The whole idea of having atom pant under your outer shell is wrong.and idea that you stop for break and put these on is nice but once you start moving again and you slowly became warm and sweat than you can't dump no heat.(all depends on weather).I like the weight of these pants.I like these pants.they will be my choice if they can add one damn velcro strap and extra slider at waist.for $179 I think they could give us little stuffsack too! I love my montbell.lookin sharp with kappa hoody carbon copy.I will post some pictures soon.

Adam

Member since 
Responded on

I somewhat disagreed with tom2952697's post, but after buying the pants and trying them on around the house, I can see how all his points are valid.

I could see myself wearing these pants over a lightweight pair of wool leggings and under an Alpha SV Bib. Honestly, only in the coldest of conditions though, and only if I was miserably cold.
Other then that, I might wear them walking around cold cities, since they're pretty decent looking. Just wish they were an inch or two longer (I have long legs) as it would be a nicer city pant that way.

For reference, I'm a size medium (a little tight on me at the waste) I waver between a 32/33, and I usually wear a 33/34 inseam.

would these be good to use under sabre sv...

Chris Fowler

Member since 
Posted on

would these be good to use under sabre sv pants on really cold days?

PAUL UDOVIC

Member since 
Responded on

Yes
The Atom LT pants are warm (coreloft insulation) and breathe really well). They are not articulated for snowsport movemnt- but will keep you nice and toasty on those Chilly days!