Which ones are best? So I've had the Nike Zoom Fly Flyknit from a few years ago and it's fit and served me wonderfully. They're getting old and I like the carbon
Nike Zoom Fly 4 Flyknit Running Mens Size 6/Womens 7.5 White Red CT2392-006 | eBay
Carbon fiber in a shoe?! Nike Zoom Fly Flyknit - Casual runner Review/Onfeet - YouTube