When I received it, the air bladder in the left shoe had a hole and the air leaked out. I heard it clearly every time I took a step and checked for bubbles with water. They did. It may have been damaged during the shipping process as the box was badly damaged. However, other reviews of Nike Air shoes say that the blisters burst very easily and within a few months. I'm really disappointed with this quality for a brand like Nike. Air problems aside, the shoe fits great, is very comfortable and has great grip.