everytime my grandparents need to travel, i take care of the house. generally i smelled grandma's shoes, but she took all of them for travelling. then i found these old flipflops. they're grandpa's. when i took it to my nose, i felt a strong smell. the insole is soft, very easy to sweat the soles. then i accepted this experience: use, smell and cum on a very stinky mature male shoe for a month. here are the results.