It's as comfortable as can be expected. I have tried outdoors, man pack badlands, and initial accent. Kifaru has been the best for me. The initial accent was good, too. If I had no budget and had to buy a setup now, I would definitely go with Kifaru. In fairness, I haven't tried xo or stone...
I wore mine this season as a shell over a base layer and over my puffy. It worked very well both ways. It's definitely something I would buy again. Mine fit true to size.
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