Puma claims the Fast-R Nitro Elite 3 is its "fastest ever running shoe," primed for use in the London and Boston marathons.

We often see Kate Middleton dressed up in fancy flats or strappy heels, but every now and then she gives Us a look into her ...

The Fast-R Nitro Elite 3 claims to offer the biggest improvements in running economy since the Nike Vaporfly took the world ...