Shoes designed for parkour in mind. They reduce fall damage and boosts you in jumping across rooftops (maybe). Would be fun to see people jump off low roofs for a dramatic entrance.
As for shoes, why not develop some ICly and RP and market them as you like? Several current lines of codedly statted clothing were formerly things players made and just sold that were later taken up as brands by staff.
Do NOT promote your tailored clothing as giving you ANY sort of stat/skill advantage.
There was a plague of this not long ago, and there's still pieces out there that people think give them stat/skill advantages when they don't. This is entirely deceptive to other players and will get staff on you if you do this.