I narrowed my search to 2 choices: The Mountain Hardware Tech Jacket and the North Face Pamir. Both have WindStopper, and both looked nice. I went with The North Face Pamir and am very happy with it. Wore it last night to a high school football game where temps were 45 degrees and the wind was blowing about 15-20mph. Most people were quite chilly and had on layers of bulky clothing. Not me. I purposely through on a Nike short sleeve dri-fit running shirt (very light) and then this Pamir jacket. I was toasty the entire game. Felt absolutely no wind at all. Two thumbs up for The North Face Pamir. Bottom line: this jacket is incredibly light weight and thin - but provides unmatched warmth. It is as warm as my winter coat in almost all areas. I plan to use it jogging and doing all my outdoor activities!