Very light shoes. However, with some quirks. Good: 1. A lightweight. Once you put it on you hardly feel it. 2. Breathability There are many ventilation openings in the upper of the shoe. This way your feet get good air circulation while running.3. Soft FoamThe foam pads are soft and comfortable. Definitely recommend it. Cons: 1. The size is too tight They are too tight for the size listed. Even wearing very thin socks will crush your feet. However, as mentioned, there's plenty of ventilation so this isn't really an issue. So order 0.5-1 size bigger.2. Poor quality, there are streaks protruding from under the cover. The attention to detail is not at the level of the big brands. But it's cheap. bang for the buck.