Outdoor companies don't seem to think I exist... I'm a 5'5", 126lbs man (an endangered species, i guess because there's not enough demand to make an xs jacket for us). Would a small in this jacket fit me? I have a real problem getting small mens stuff to fit me. (I'm not wearing a women's jacket and i'm not shopping in the kids section, so don't even suggest it) Does arc'teryx run small, fitted, tapered? If not, can anyone suggest a brand that does?

Thanks in advance, Cillian...

Cillian, first of all this jacket is awesome. I have the Candy Apple Red and its pretty well the best looking jacket I have ever seen. Its light, durable and Im stoked to go alpine and ice climbing with it this winter. In terms of size, I think this jacket fits a bit big. This is emphasized by the AR denotation, meaning 'all around' so you can do whatever with it. Its meant to be layered with. I find I have to size down with arc for the 'slim' fit I like. I am about 6 feet and 160 and the small fits great with a t shirt but can still handle a down layer ect. I would go with the XS because I think you would be swimming in the small. Hope this helps! Larry

Cillian, I think Brandon is right on the money here. I would go with a size small in this jacket, it should fit very nicely on you.

Cillian, if any outdoor product is going to fit your trim frame, it's Arc'teryx. And they make the Theta AR in M's XS, in all the colors. The challenge is to find a retailer that carries that size, but if you look around, you can certainly find someone to special order it. Backcountry.com may do it for you-talk to the Gearheads to see if it's an option. One other jacket to consider is the Beta AR, which is a shorter cut jacket (but not too short) and may work better for you, unless you're looking for maximum derriere coverage, which the Theta AR provides. One note to consider, the 2010 Theta and Beta jackets have a new pattern that seems to fit a bit more trim in the torso, but still have room for layers.