I carried three thin, cushy insoles, each a different kind. And 3 pairs of socks, each different. I could change the layers around, more layers, more cushion, less cushion, fluffy socks, thin socks. It kept my feet guessing. Elevating them when resting and sleeping helps hugely, too. My limit before the hike used to be 16 miles before I would be hobbling in pain. On the trail I got that up to the high 20s.