I've been hiking 20 years now with your usual standard hiking pants, TNF, COLUMBIA etc. I've switched to short tights, standard Nike ones, during pre-season training. As it turns out, there's just nothing more comfortable for me, and now for my wife as well. It's the most breathable, no resistance whatsoever when you lift them knees up high and best of all- they have no pockets (usually), so no more excuses for stuffing your pockets with more weight that adds more resistance. For us – we can never switch back, it just made hiking a lot easier.