Nike Free 4.0 Flyknit Black Men's - 631053-001 - US
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).
Nike Free 4.0 Athletic Shoes for Men | Mercari
Nike Free Flyknit 4.0 Multi-Color Men's - 631053-004 - US
Nike Free Flyknit 4.0 Review | Running Shoes Guru
Nike Free 4.0 2015 Spring Summer release | Run Ran Run