Whether you're training for a triathlon or heading out on a weekend bouldering excursion, the Arc'teryx Men's Accelero Comp Short-Sleeve Shirt keeps you cool so you can push your limits without melting into a sweaty mess.

  • Viente fabric is lightweight and quickly wicks moisture to speed up your body's natural cooling process
  • Helius venting panels in the back, underarms, and shoulders ditch excess heat when you're working up a sweat
  • Articulated cut and gusseted underarms give your body room to move without putting extra fabric in your way
  • Strategically placed flatlock seams cut down on chafing
  • Reflective logo makes you a bit easier to spot when you're out in the dark
  • Reviews
  • Q & A

Good quality and fit

  • Familiarity: I've used it several times
  • Fit: True to size
  • Size Bought: Medium

I think regular fit Patagonia is the gold standard for me for sizing (I’m 5’8”, 150 and wear a medium in Patagonia and most others). Medium in this is perfect and the materials and length are really nice. I like this shirt, but it’s not so amazing I’m ordering more of them. Arc’teryx is an awesome brand - all my ski gear is from them and I’ve worn their Atom LT almost every day in the winter in Detroit for years and it still looks new. I think this shirt will be similar - it looks like it’ll last. Using it for long runs for sun protection and mountain biking.

Cool shirt but it's going back

  • Familiarity: I returned this product before using it
  • Fit: True to size

The description says:
"[body] Viente (polyester), [side panel] Helius (polyester)"

Please note: The entire back is Helius. (noticeable see-through)

Great shirt

  • Familiarity: I've put it through the wringer
  • Fit: Runs large
  • Size Bought: Small

I bought this shirt for long hot trail running days. The shirt is light weight, breathable, and wicks moisture perfectly. On top of all that the Arc'teryx craftsmanship shines and the 50+ UPF rating helps to keep you out of the sun.

Cool shirt literally and figuratively

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: True to size

This is a great shirt. Lightweight, thoroughly ventilated, high quality, and great colors.



The articulated cut and gusseted underarms create a nice structure that many shirts made of light materials lack, making them feel more like a silky poncho than a performance shirt (not that I would know what a silky poncho is like).



The fit is true to size with the sleeves being on the longer side of average, but not enough to make them awkward.

Great Shirt

  • Familiarity: I've put it through the wringer
  • Fit: Runs small

I have used this shirt probably 2 dozen times and I still can't get enough of it. It is great for getting outside and hiking on hot days because it is very light weight and breathable so it helps keep you dry. Also if you sweat through the shirt it is so breathable that it will dry surprisingly quick with the heat and help from the wind. This shirt is also very easy to clean but I have found out that after washing it just air dry it to help keep the material in the best shape. The shirt has a nice fit to it but it is a slimmer fit than most brands.