I wore it around the house for few minutes, and took it straight to Mt. Dickerman in the North Cascades (elevation gain of about 4000 feet). My feet felt very comfortable, stable, and secure. Although it was a super hot day, my feet did not get super sweaty. No blisters or major issues at the end of the hike. No break-in was needed.
This review was written in the old system and had content requirements that are different than reviews written today.