JCM,
They are not going to absorb water any more then the inside of your boot will.
Been wearing Superfeet for 6 years now, and wear them in my work shoes (I'm on my feet all day), in my hunting, hiking, and ski boots.
First, higher the arch, the more volume they use up in your shoe. I have what I'd describe as medium high arches, and a high instep. Green is generally too much volume, and I've settled on Blue and in a few boots Black. Black has the least amount of volume (don't know about the Carbon). Even though the Blue and Black insoles are for "normal" arches I find they work great for me, and leave a lot more volume than the Green. Superfeet cured my plantar faciitis. It literally took less than a week of wearing the insoles and the faciitis was gone and has never returned.........
If I don't have the luxury of a second pair of boots (like backpack hunting) I bring an extra set of insoles. Even if my boots aren't dry in the morning (which can be the case if camping) swapping out the insoles are almost as good as a dry pair of boots.
Casey
