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 Trainer 3.0 V4 Premium Pack | Hypebeast
Nike Free Air Max Training 3.0 V4 #749361-066 Men's Running Shoes Size 42 / 8.5のeBay公認海外通販|セカイモン
Nike Free Trainer 3.0 - Sneaker Freaker
Abbreviation function of the muscles Nike Free 4.0 V3