These boots seem sturdy and built well.
As soon as i put them on and used them, they were comfortable.
I use them to work on " laundry fridays" and when i got out into the feild to check on my cable jointers in job sites.
No problem shifting gears on motorbikes specially when i bring a bike to work on a friday.

They are a bit heavy though.
But the solidness would be the reason behind the weight.