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

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

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.

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.

Excellent stuff as always made by Arcteryx - comfy, nice, warm and fits very well !!!

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.

the warmest and most comfortable base-layer out their! the zipper dose not chafe and it stretches with every move! very warm by itself! the only thing its odors get trapped in it so wash it everytime you use it. buy it!

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.

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.

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.

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.

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.

Always spend the money on Arc'teryx, because it's always worth it. I've worn this as a midlayer on bitter cold ski days and have been very impressed (and warm). I also like this as a casual sweater type shirt for nights out. Yes, I like to wear my gear to the bar. I'm looking forward to using it as a top layer for early season hiking.