They are quite comfortable right out of the box. Just a little new toughness. My feet get a bit warm after about 5 hours so I'm not sure how well they breathe or not. But most of all I love these boots. I wear them to work from Monday to Friday.
Pros
Love her! Light and comfortable. My third pair of Merrells. Definitely not my last!
Cons
Shoes can be too expensive for people on a budget.