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 Flex Run 2015 Men's Running Shoes
Nike Flex 2015 Run Mens Running Shoes Size 8 Trainers Sneakers White NO INSOLES | SidelineSwap
Nike Flex 2015 Run Athletic Training Shoe Mens Size 13 709022-100 White Black | eBay
Nike Running 2015 Boston Marathon Pack - Sneaker Bar Detroit
Amazon.com | Nike Girl's Flex Run 2015 Running Shoe (GS) Lava Glow/Pink/White/Lime Size 6.5 M US | Running
Nike Air Max 2015 Men's Running Sneaker - Walmart.com
Nike Flyknit: Waste reduced by two million pounds in weight so far