Nike Mens Free 4.0 Flyknit Dark Obsidian Lava Royal Sneaker - Walmart.com
Nike Free 4.0 Barefoot Ride Running Shoes Blue Navy 729818-401 Men's Size 10 | 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).