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The Arc'teryx Men's Motus Sleeveless Shirt uses high-tech Phasic SL fabric to quickly manage moisture and help your body stay cool and dry. This shirt won't leave you with that slimy feeling you can get from some synthetic tops thanks to intelligent placement of dry, soft fibers next to your skin. The sleeveless cut lets you show off your guns or at least cool them off in the fresh air when you're working up a sweat.

  • Phasic SL fabric blends wicking and hydrophobic fibers to pull moisture away from your skin so it can evaporate while giving you a dry feel next to your skin
  • Encapsulated silver ions inhibit the growth of odor-causing bacteria so this shirt won't build up a funk if you miss a laundry day
  • UPF 25 shields you from the sun's not-so-good effects
  • Flatlock seams reduce friction to prevent chafing
  • Reflective accents make you easier to spot when you're on the road after dark or before dawn
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Great shirt, wish they still had my size

  • Familiarity:I've used it several times

I bought these shirts because I was looking for a lightweight, sleeveless t-shirt to wear running. I had been using some of the under armour recycled sleeveless t-shirts, but I came home drenched in sweat after every run and those shirts seemed to hold moisture rather than cause it to evaporate.

The motus shirt has been a perfect answer to this issue. They are quite thin and lightweight, and I've felt like I stayed 10 degrees cooler wearing these. They tend to be damp when I get home from running, but I'm not wringing them out like I was with the UA shirts. My only major complaint are the colors; some lighter, more visible colors would be nice. I often run at night or twilight, and although I wear blinking lights, some brighter colors would be more visible to drivers. I'm reluctant to wear these during daylight hours because I think they'll focus the sun's heat rather than reflect it. My only other complaints is that EVERYWHERE seems to be sold out of the XXL. I'm 6'6" and I have a 38-40" waist, and the XXL fits me comfortably (but it is fitted). If I had a better physique, it would probably look flattering.

Outstanding Active Shirt

    This shirt is ridiculously comfortable, stylish, and performs awesome in moderate to vigorous activities. Warm Weather activity is perfect in this, I live in Tucson and it's a go to shirt for mountain bikes, runs, hikes, workouts, chill sessions, Yoga, whatever the list goes on.

    I'm 6'4 195 and the large is athletic killer fit. Get this and guarantee if you get the right size(no worries with killer bc returns dept) you will fall in love with it.