I love pockets, who invented the pocket, no kangaroos here, mate. Well let me tell you; Ötzi "The Iceman" from way back 3,300 BCE (ages ago) was found to have a belt with a pouch sewn to it that contained a cache (what a lovely word) of useful items. And look at us now. The Percival 5 pocket trouser, built from heavy weight twill, pockets to sort your scraper, drill, flint flake, bone awl, and a dried tinder. Or room for a phone and some other bits n pieces.