My 2018 hiking boots were rated for 500 miles, but the sole split clean off at 120. I called the company and they read the same spec sheet back to me like a prayer. Now I wear new boots around the house for a week before I even think about a trail. You just can't trust the numbers they print.
Yeah, learned that the hard way when my "waterproof" bag turned into a mobile swimming pool. The brochure didn't show my stuff floating. Guess that's the premium soggy experience they left out of the specs.