I was expecting these to be similar in comfort to other Ultraboost but that was not the case. The upper was a mesh material which is breathable and comfort is okay. This shoes drops the ball on the sole comfort because it is no where near as comfortable as my Ultraboost 4.0 or 2021s. You're foot is sitting on top of a hard material base instead of the boost material itself. The design of the shoe is awesome but falls very short in comfort.