Very sturdy but a pain in the a$$ to break in. Stepped on them, beat them with a rock, run them over with a truck, wore them for 2 days, nothin. What finally helped was putting them in the freezer for a couple hours. Got them cause i needed a pair quick cause my old boots fell apart after 2 years of constant use. Been wearing them for 2 weeks or so and so far so good.
Rating: [4 of 5 Stars!]