Nike Flex 🐹New in a box🐹comfy 👟 Many of the reviewers loved the comfortable ride of the Flex RN 2016. The price tag is very affordable. It is very flexible, according to some. The very light, as noticed by more than a few. Most of the comments noted that it is quite durable. Several runners living in hot-weather areas valued its excellent breathability. Its lightness is appreciated by a handful. Despite being very light and minimal, more than a handful of runners use it for gym workouts.