Nike Free 4.0 Flyknit Blue Gray Running Shoes 631053-014 Mens Size 15 New | eBay
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 N7 Spring 2015 Collection - SneakerNews.com
Nike Free 4.0 Flyknit 2015 Review
The 2015 Nike WMNS Free 4.0 Flyknit • KicksOnFire.com