I had high expectations for these boots, but was very disappointed. The hard and stiff heel cup in these boots gave me terrible blisters withing the first two miles of wearing these boots. These boots chewed up my heels. I had purchased two different sizes to make sure I got the right size, but to no avail. They tore me up. Very disappointing for a boot that claims to be "blister proof". The thing I found odd is that I am not prone to blisters, but these boots tore up my heels. I have been hiking and backpacking for 30 years under all kinds of conditions and I have never experienced something like that. As I went back and read more of the reviews, I realize I am not alone. These boots seem to affect many people the same way. I could not recommend these boots.