To flip flop has such negative connotations: to prevaricate, to hedge bets, to never fully commit to one thing or another. Ironically, the shoe of the season, which shares a name with the verb and not a disposition, is all about committing.
The flip-flop is about dedication: to baring the toes, to airing out the feet, to brave having as little as possible between oneself and the pavement, the Tube station, the sticky dancefloor. It’s the opposite of going back and forth — it’s all about going all in.