fleetfeetsports on Twitter: "The Fastest Shoe on Earth. The new Nike Zoom Vaporfly 4% Flyknit from @NikeRunning. Available now 👉 https://t.co/PUQr31BDT7 https://t.co/JAzV1NZoLP" / Twitter
Should you buy the Nike Vaporfly 4% Flyknits? We asked a podiatrist.