Mammut makes good boots, some “interesting” newer models but the leather backpacking boots are as legit as any. My current pair is basically an older pair of the above heavier boots, they are going on 10 years old and still going strong. Mammut purchased Raichle boots back in the early 2000’s, and all of the people, lasts, etc went with, now just branded mammut. Raichle made some of the best heavy leather backpacking boots out there. I’ve used a dozen diff pairs and fitted dozens more, I have found they run fairly true to size except people that have a longer big toe or second toe tend to need a 1/2 size up or you bump up against the front of the toe box. Most of their backpacking boots tend to have a roomy (high volume) toe box. The lasts curve to the inside of the foot more than some, which if its a problem for you usually feels like they are narrow on the outside side/front, and there’s dead space on the inside side/front. If going up half a size doesnt help with this, its just the shape of the last and may not be a good fit for you.