Steve Chapmanwrote a review of Mountain Hardwear Effusion Power Jacket - Men's on November 15, 2012
Familiarity: I've used it several times
I just got this jacket and so far ... so good. Haven't run in anything below 45 degree's but it was sprinkling on that run and this jacket worked as advertised. It seems to hold heat well while warming up and then bleeds it off after you come up to mid work out temp. The pic I attached is with the hand warmer / gloves tucked in but these are a very cool feature. One less thing to carry. The breast pocket is big enough for a Nano, credit card and car key. There's a pocket on the inside but it's directly underneath the outside pocket. If you were to put anything in both, it would get a little bulky.