Our planet's future depends heavily on so-called "upcycling", as recycling can still lead to environmental loss, and bi-cycling decreases the chances of successful conception by at least half. For upcycled satchels which'll leave no ambiguity about your awesome sense of style, sling on Peace4You.
Designing handsome, one-off carryalls out of Deutchland, Peace repurposes found materials (largely military surplus) in furtherance of a noble, adorably broken English credo lamenting the end of natural resources and their messengers bags' promise to help "stop this course of time", though the last time a messenger went back in time, you had to sit through an entire Ashton Kutcher movie. Smaller shoulder-slingers include the olive/green/sand "pauline-1966" made from a recycled leather jacket/ French army tent/ navy kitbag, and a sand/blue joint made from a Belgian duffel and fabric from "bakertrousers", dubbed the "leo-2054" -- also a futuristic DiCaprio who'll still be hotter and more talented than Ashton Kutcher ever was. For dudes rocking a full 15 incher, they've also got larger rucks like the desert/olive "paul-2056" fitted with a German Navy alloy snap hook for closure, the pad-reinforced "paul-1936" from random leather scraps and another French army tent, and the rugged, all-black "paul-2067" from a washed leather jacket and a leather schoolbag, that probably just got done stuffing your monogrammed L.L. Bean in the locker!...although technically, that's where it belongs.
Because just making bags out of old bags isn't enough, they've also got the "anton-2083" designed to emulate a US Army bag from 1943: a time when our planet's future was fought for by dudes who actually had sacks.