Nike Free 4.0 Flyknit Blue Lagoon Bright Crimson Men's - 631053-403 - US
Nike Free Flyknit 4.0 Multi-Color Men's - 631053-004 - US
Nike Free 4.0 Flyknit White Black Men's - 631053-100 - US
Sneaker of the Week: Nike Free 4.0 Flyknit | GQ
Buy Free 4.0 Flyknit 'Black' - 717075 001 | GOAT
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 Flyknit 4.0 Review | Running Shoes Guru
Tips for Buying Minimalist Barefoot Running Shoes. Nike.com