Compared to the fit of something like Gamma AR pants, these are way too narrow at the hips and fit like jeans. I personally find them only good for walking.

They do look good and seem to breathe reasonably well. The material.is very comfortable next to skin.

Echoing comments below that the sizing is comically small -- i love the Gamma pants, the sizing of these pants was 1 or 2 sizes off.

These pants rock! (pun intended) I use them primarily as a daily piece and for climbing outside. The fit and material look like they fit in at the bar without having an overly "outdoorsy" look but are still burly and lightly stretchy enough to climb with. The material is also relatively soft next to skin and they breathe pretty well too. The side stache pocket is also really nice for storing a phone or a snack while on the wall.I am a pretty slender build and don't have overly large quads or calves so the leg of the pants fit me really well. I'm also between a 32-34 in the waist and I wear the 34 in these and they fit like a dream. I constantly find myself digging these out of the laundry to wear again and again.

Bought these pants for Summer hiking. They are light, have a nice comfortable feel and seem to breathe well. Only complaint is how absurdly small they are. Arc'Teryx stuff seems to run very small for pants, shorts, etc in my experience. I am a Size 34 for most pants so I went with a Size 36 with these and they are still extremely snug. I mean a 34 waist is a 34 waist isn't it? I've had similar problems with shorts and other pant models from Arc'Teryx. Great stuff but you have to take care on the sizing.