MHWBwrote a review of Arc'teryx Fission SV Insulated Jacket - Men's on December 2, 2013
Familiarity: I've used it several times
Fit: True to size
Needed a new winter coat for the Boston winters and am so far thrilled with the Fission SV. The jacket is warm and is easy to layer under without creating to much added bulk or limiting motion. I am 5'10", 179lbs, athletic build and ended up with the Large after trying both the L and the M. This is the one part of the jacket I think they may need to consider redesigning...the M fit well in shoulders and sleeves but was noticeably "snug" around my hips and thighs. I am a 34 inch waist so this seemed a bit odd. The Large, while being a bit long in sleeves and roomier in the shoulder, fit much better overall AND allows for greater layering capabilities. I have already been out in 20F weather with a t-shirt and mid-weight fleece on under the jacket and could not feel any of the cold. Love this jacket!