I have had Carolina shoes before and it was put them on and go, no breaking them in and they lasted me for about 3 years of wear. (I'm hard on shoes so I was happy with them). And of course I needed a new pair so I got them. I am on my feet and walking alot at work and before I got to my job area (I walk a ways to get there). I could already feel the rubbing on my heals. And halfway to lunch my feet started to burn. Buy the time I got home my feet were killing me. And I have quarter size blisters on the back of my heels.This never happened before with this brand so I compared the difference. One the toes are more square. The inserts are different, but everything else looks the same. I don't know what to think. But the pictures are the boots side by side and the blister on one of my feet.