The discovery of frozen ancient ancestors has provided us with valuable insights into human evolution, namely that there hasn't been much, as apparently they were murderous backstabbing a-holes then too. Looking backwards to evolve modern footwear: OeTZI3300.
Named for the remarkably well-preserved (and apparently murdered) iceman found in the Alps sporting the oldest-school set of kicks, OeTZI3300 aims to bring that simple-yet-functional ancient footwear into modern times, with all their designs resting on an antimicrobial cork foot bed that molds to your feet while keeping actual fungus from doing the same. Their latest spring model's the OTZ-300GMS, a super lightweight loafer-esque number whose natural rubber/Jute fiber outsole's topped with Italian coarse linen, avail in colors ranging from light gray-ish Natural, to the burnt orange Arancio, to the deep purple Viola, which sounds out of place during "Smoke on the Water". They also have sneaker/sandal hybrids (made from top-grain leathers and oiled suedes) boasting a Velcro strap at the bottom & laces up top, nab-able as either a low-top, or a mid-height chukka, which does you no good on the basketball court. C'mon, Jamal Crawford, pass the rock!
Because ancient man also needed to carry stuff, they've got a nude leather-trimmed canvas rucksack with a drawstring closure and an interior pouch for your laptop, which, when frozen, will quickly turn you into a caveman.