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If we are talking about a real world Aragorn, we could look at medieval and ancient peoples' approach to weatherproofing and low weight and volume travel. From breathable seal gut parkas to oilskin, heavily lanolised wool like the birrus brittanicus to specific weaves that block wind and shed rain like loden and boiled, felted wools, perhaps the most hardcore extant example of a long distance travelling ranger using non petroleum materials we have is otzi. His waterproof was oily furs and a woven dried grass cape that acted like shingles and thatching
Even super-hardcore survivalist Stone Age humans had to carry lots of gear, especially in the inclement terrain of Europe / middle earth. Otzi the iceman was found wearing tonnes of layers of fur and a huge fur coat and Gucci fur hat, with a huge woven grass rain tarp / poncho, straw packed fur shoes and boxes of food and repair gear, and it's likely he would have been carrying a lot more if he wasn't on some murderhobo John Wick adventure (according to the film Iceman). These people most likely hunkered down in caves, under trees and in houses and tents, and built shelters and fires in bad weather because drying a sodden animal pelt on the side of a mountain in rain and gale force winds is not an option.