Nike Free Flyknit 4.0, 631053-003, Electric Green / Gray, Mens Running, Size 12 | eBay
Nike Free Flyknit 4.0 - Men's | Runner's World
Nike Free 4.0 Flyknit Review: The Best Nike Free Yet?
Have used these Nikes back in 2015 ( Nike Free 4.0 v3). Personally loved the comfort of these shoes. I can't find these anymore where I live ( not in the US).