Odog
ArboristSite Operative
I quit the felt liners. I got one of those cushy workout mats that conform to your feet when you workout (ok my ex wife left it at the house when she bailed on us, I haven't worked out in years) anyway, I took that and cut it to size to fit in my boots, that and a pair of thick socks and I am set. Standing outside on the frozen ground and rocks all day and my feet don't get cold or sore.