system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are pelts worn with the fur outside?

Recently saw the Revenant and got curious.

I never understood why pelts are basically worn with the soft plushy fur thats nice to feel on the skin  outside, and the rough stiff durable leatherskin that holds the fur inside, while it would do way more sense the other way around.

The only argument I can see would be insulation due to trapped air in the fur, but that doesnt make the deal for me as fur inside for wearingcomfort has *still* air trapped inside.
gpt
Its the same reason that fur on the animal is on the outside.  The fur can catch moisture and snow and hold it away from us, so that it doesn't melt and then freeze like it would on cotton or wool clothing.