Cleaning advice “3L Performance Cotton” 2014

Obviously hand wash but the dirt is fairly ingrained, gimme some tips, anyone familiar with this material I know it’s just a cotton but it is basically glue layered to a thicker inner cotton layer Due to the dirt she’s just been hiding on a hanger for a few years Fraying is on inside of pocket, not bothered, might sell but if she cleans up nice maybe I’ll get a few more years out of her