Lars A.wrote a review of Marmot Reactor Fleece Jacket - Men's on October 22, 2012
Familiarity: I've used it once or twice and have initial impressions
This jacket is soft, comfortable and the Polartec membrane makes it possible to wear it as an outer layer on relatively calm days. However, being a tall and somewhat slim guy (6" 2', 177lb), Marmots just does'nt fit well. The medium had too short arms but nice width, and the large had ok arms but too much width. Kinda felt like wearing a tent... I sent both of them back in exchange for a Norr�na Falketind, L( which btw is awesome!).
I can add that the reason I wanted a slim-fit fleece was because I plan on using it as a mid-layer under a Patagonia Triolet shell, and therefore wanted as much mobility, e.g. as little extra garment as possible.