This is probably my favorite piece of veilance gear (I have the partition, field jacket, isogon, and node). The back material is lighter weight and more breathable so you don't die in warmer weather. It's still p waterproof though. (The material appears to be the same as the isogon). Selling as I have a duplicate of this that I found for a steal. Some light wear, I have taken good care of it and it's in a big rotation of other outerwear. i think this is a great deal. Includes shipping via priority mail via usps.