>>939586If you read their mission statement and watch their YouTube the videos, the guy started the company to provide high quality, cheap products so that college kids just starting out could go backpacking without dropping a grand on equipment. It's definitely 850 - I also have an 850 0 degree Kelty Cosmic and the Outdoor Vitals one seriously compresses to about half the size. The loft is insane. It rises 4-5 inches after rolling it out. I can't find a single negative thing about this bag.