Beef up the warmth without the bulk.

Keep cold weather guessing when you pull on the Arc’teryx Men’s Rho AR Long-Sleeve Shirt. This double-agent base layer also acts as a cozy midlayer when the temperature really drops. Polartec Power Stretch fabric moves with you and wicks away moisture in the process. Lightweight and close-fitting, the Rho wants to be your new shirt on the go.

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Arc'teryx Rho AR Top - Long-Sleeve - Men's

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Here's what others have to say...

How snug is the AR top supposed to fit? ...

How snug is the AR top supposed to fit? I got a medium and I am 6'1" and 172lbs. It seems snug but I figured it was a base layer so it is meant to be worn against the skin correct??
Thank you.

Responded on

Absolutely correct. Base layers wick best when they touch the skin.

So I just recieved the new size in the...

So I just recieved the new size in the mail and have been wearing it a while. Honestly I am cold as hell with it on. I took off a long sleeve cotton shirt and it was warmer? Its like this thing has air conditioning built in. Really, its so funny and strange I am almost laughing as I type this. My question is, is this like Mysterioso in that in insulates better when wet?

Dave thanks for the info. I never thought about it that way. Honestly I have not put this to the test yet, (heavy movement) but I have to say its pretty amazing from just sitting around in it.

Best Answer Responded on

It's designed to wick perspiration off the skin. When moisture evaporates, it cools. So, yes, in a sense it does have A/C built in.

But, it's also designed to be worn as a base layer under an insulating layer and a shell. On its own, it's not supposed to keep you warm.

1 5

short and wide

This shirt is the first arct product i didn't like, its short and wide with short sleeves

Responded on

Kjeil - I respect your opinion. However I do have to say after recieving this myself, it seems so different than what I found I have to wonder if you did not end up with some sort of defective version of this shirt. I am 6 '1 250 lbs regular torso and I found this to fit exceeding well to note the shirt was actually longer then most.

How does this compare to Patagonia Capiliene...

How does this compare to Patagonia Capiliene 4? Thanks!

Responded on

The Rho AR is ever so slightly warmer and has more stretch. I'd say the main difference is the smooth face on the Rho AR that helps it slide under layers and also bounces off light snow. It also won't pick up fuzz or pet hair like traditional fuzzy face pieces.

5 5

Excellent Cold Weather Performance Fleece

Very well made and excellent fit. Am 6' and 195, XL is form fit for trail running, etc. and XXL is great for casual wear when very cold. I own 4 of them.

I stand about 6ft 0.5inch tall and weight...

I stand about 6ft 0.5inch tall and weight around 198 pounds. chest 42inch, waist 38inch, hip 41inch.

which size will fit me best? L or XL?

Island peak

Island peak

going to the summit, I have two of them and wore them about 90% of the time. it kept me warm in all temperatures. i

2 5


This is the ONLY Arc'teryx shirt that I've bought that I did'nt love.It does not fit like anything else I've got from them-I can't even tell you it did not perform well,as I could'nt even get it over my shoulders.As always though,Backcountry stands behind everything they sell and immediately got me sorted out with a Arc'teryx Tau Pullover,my 3rd.

5 5


fits great, excellent craftsmanship, and incredibly high quality. my twin raves about this product and every time i steal it i know why. lightweight and water repellent. good stuff. highly recommend

5 5

They've really outdone themelves this time

this has been my go-to pullover for the past year and it does it all! It sheds light rain like the back of a duck but smells MUCH better and is extremely soft and comfy and super stylish. heck, why not look good and feel good? this thing gets more compliments than any other item i have. i typically wear a small but a medium is a better option for this guy (6'3 175ish) i have one in both sizes and gave the small to a friend because it shows my sasquatch belly when i raise my arms in it. medium is much better for the rest of the world on me.

They've really outdone themelves this time
5 5

bad ass

once you get past the price you will love it. nice enough for the town great for cold weather activities i use this for mountaineering under my shoftshell and it is the perfect warmth to weight ratio. breathes well and dries fast and is super soft on the skin.

I am 6' 175 lbs. not sure what size.

I am 6' 175 lbs. not sure what size.

Responded on

I am 6'4" & 265. bought the XXL

Fits great in the arms-stretchs down to cover waist and wont prevent belay

5 5

Right cloth for the right weather and situation

I've been using this as a base layer alone, for really cold weather (down to 30ºC below cero) to climb and do approachs always in hard alpine style. As soon as I stop to belay, camp or just take a rest I wear my insulated jacket. This way I keep my body warm enough, avoiding to be sweaty and loose heat for evaporation or convection.

5 5

Rho- The greatest

Absolutely the best in class (in my wardrobe at least). I wear it skiing as a mid-layer under my Gore-Tex shell and am good down to single digits with no problem. For those who wonder if Arc'teryx is worth the price - it is. I would give it six stars if they let me.

5 5

My Favourite Arc Piece

I could live in this thing - fits perfectly, (6ft 160 - Medium), blocks the wind, cozy on the inside. Great by itself for running in the fall or layered under the BC Rime for running in winter (in Canada at least). Highly reccomended.

4 5

Nice fleece but a bit short

Just got one of these from SAC in size M and I'm 6'3" tall and weight 170lbs. The fit is pretty perfect except probably length wise it could have been slightly longer.
The sleeves are long enough for my long arms which is nice and it is a bit stretchy which is perfect to ski/climb with.

Write your question here..Arcteryx Rho AR...

Write your question here..Arcteryx Rho AR vs MH Power Streach Zip T.
Is quality of fabric used by both manufactures same? I do have MH and Marmot Power Strech already. Marmot's fabric is thinner and after about 10 washes looks like a rag. Hovewer product tag was stating exactly same fabric.

Responded on

There are a couple versions of Power Stretch, and it's not obvious who's using which one. The better version has a higher nylon content which helps it hold up for longer. Arc'teryx uses the higher quality version of this fabric, and this, in combination with the fit and construction, are what separate the Arc'teryx Power Stretch pieces, like the Rho AR, from power stretch from other brands.

2 5

weird fit

i was looking for a nice mid-weight powerstretch top to wear alone on chilly days and as a layer on colder ones. i thought this was exactly what i wanted, but looks can be deceiving.

for one, the sizing is different than all other arc'teryx gear i've used; it runs a bit smaller. not a problem as i could have easily swapped sizes.

the deal breaker for me was the hem, or mainly how it blouses out. i'm all for a drop tail to give some more coverage in the rear, but the bottom-back seam juts out in a skirt-like fashion. it looked like i was wearing a dress from the back. needless to say i returned this top.

5 5

Warm and perfect fit

I love this fleece. The stretch makes it fit very nice, and it is as warm as a wool sweater. The price is not too bad either. Keeps apperance and shape well after washing.
Guess I'm going to get this one in another color, if I'm not going for Peak Performance new heli mid layer. Got the PP black light, and loves that one just as much as the Rho AR.