I bought these for tactical training and all around use. I wore them for the first time and forgot I had shoes on at all. They can become hot and times but nothing more than any other waterproof boot. The guys made fun of me for wearing them as tactical boots until they saw how light and comfortable they are. I am now a Keen believer. I have not had them hiking yet but I have total faith in their abilities. As the other reviews state make sure to order a 1/2 size larger than your normal wear.