Seriously mate? wrote:
Better title would be "2:09 Adidas sponsored runner Herpasa Negasa wears Vaporflys and runs a 4% PR of 2:03"
6 minute PR**
Not sure what you're getting at. It was a 4% PR, which is funny because it's the name of the shoe and assumed to be a marketing gimmick because elites obviously wouldn't improve 4% with the shoe.