SomeGuyWhoClimbswrote a review of MontBell Thermawrap Pro Insulated Jacket - Men's on October 10, 2012
Familiarity: I've put it through the wringer
A great piece of kit, it's always in my summit pack and typically always in my pack for belays.
Fit - I'm 6' 2", 190 lbs with pretty broad shoulders and a large fits like a dream; snug but not too tight, can layer underneath w/ a base layer and an R1 fleece hoody.
Weather - Seems to block wind pretty well but won't stand up to light rain for more than 10minutes or so as the shoulders will eventually wet out. Not an issue though as it's an insulation piece, not rain gear. Have been relatively comfortable into the high 20's w/ just a merino wool base layer and this piece on. You're not going to be toasty but you're also not going to be freezing. Typical alpine comfort.
Durability - Has held up well for two seasons now but I will warn you that it's not the most abrasion resistant. It tends to snag pretty readily on rough surfaces such as granite, leading to small micro rips. The fabric itself though appears to limit the extent to which these rips will grow and I've been able to simply patch 'em w/ Tenasious Tape.
Options - Highly recommend the hooded version of this jacket over the non-hooded as it allows you the ability to have a neck gaiter if you don't feel like having the hood up.