Recently I discovered the “On” brand of shoes after doing some research and reading reviews in various athletic magazines. On is a Swedish manufacturer and relative new comer to the shoe game. Their differentiator is the use of the Pocket cushioning system in the sole. This scientific approach creates a number of individualized air pockets across the bottom of the shoe. This system adapts to almost any foot strike pattern and running form. Moreover, it gives the shoe a very lightweight feel by not carrying so much cushion material in the sole. In this review, I will discuss and rate the Cloudflow model from On. This particular model is the most akin to the low profile, minimalist, and racer style of the Nike Free 3.0 Flyknit.