https://www.24hourcampfire.com/ubbthreads/ubbthreads.php/topics/11238741/Boots:_Pivetta_Eiger_Oldschool#Post11238741

As the ad mentions, these are every bit as much boot as anything out there, short of plastic mountaineering boots. Outstanding sole stiffness, support and foot protection. I wish they fit me. I'd say they are size 13.5 or 14, medium to high volume. larger than 13N as marked.