One of the wildest shoes I've ever run in. The rule breaking Fast-RB from Puma is unique, but should it be your next marathon racer? TF XC Merch: https://teespring.com/stores/tf-xc-running-reviews 0:00 Intro 0:27 Upper 1:09 Midsole + Specs 2:58 Outsole 3:20 Run Types 4:54 Puma Fast-RB vs Adidas Prime X 2 Strung 6:03 Conclusion #pumarunningshoes #pumarunning #fastrb #pumafastrb #tfxcshoes