These boots are sturdy, but comfortable, not block-ish or stiff at all from the first wearing on. The sizing is perfect and can even accomodate my orthotics. I've taken 3-4 hour hikes in them, with no problems at all. My only complaint is that the laces seem to be polyester because they won't stay tied tightly and need to be adjusted after an hour or so of walking. Minor complaint, hence the 5 stars