Originally Posted by
bakes1
I didn't know bibs were manufactured to be rated for specific mileage rides.
They have specific comfort levels?
Often. Elastic Interface Technology (who make pads for Assos, Rapha, Voler, and others) rates various models at 7+ hours, 5-6 hours, and 3-4 hours.
My Louis Garneau Air Zone, Performance, and Pearl Izumi Attack shorts aren't really good for more than a couple of hours although they felt nicely padded when I tried them on in the store.
You can also use synthetic and genuine leather which maintain the same comfort level from the shortest commutes through all-day rides, although few companies still offer those options. Until I found Boure's PRO shorts I clung to my worn-out Pearl Izumis made 20 years ago with stretched out elastics, no leg grippers left, a few holes, and nearly transparent fabric because they worked great for all ride distances.