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).
Mens Nike Free 4.0 Flyknit Bright Crimson Black Hot Lava Volt 717075-6 - Walmart.com
2015 Nike Free 5.0, 4.0 Flyknit and 3.0 Flyknit Released Today
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Squadron Blue On The Nike Free 4.0 Flyknit • KicksOnFire.com
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2015 Nike Free 5.0, 4.0 Flyknit and 3.0 Flyknit Released Today