I am an oddball when it comes to fitting my shoes, normally I have to buy the 2E extra wide version of a shoe, but not with these. For the first time in my life, I was able to buy the normal shoe (non wide) and put in on and literally hit the ground running. To give some context, for the past 2 years I have only had Bondi's size 11.5 2E, but back then I was heavier (about 290lbs+-), Bondies where very forgiving to my untrained/wrong/incorrect striking to the floor form, but they allowed me to lose some weight and practice my form and make corrections. Now that I am lighter, I have shifted my normal running stance, corrected my striking form. Because Bondi's tend to be on the plush side when striking the floor, I noticed that was absorbing my momentum energy as well, thus robbing me 2cents of momentum, it was a little, but when aggregated would signify a great deal of energy/momentum being lost into the sinkhole. Enter the Transport X, they are bouncy rather than plush, they are extremely comfortable at the wide of my feet!!! They fit like a glove the very first day, to me that has never happened. I run 5k at a minimum when I go out and the 3-4 time I used them, I started experimenting with different strike styles that I have learned. Suddenly I felt like there was a gust of air around me, but there was no wind that day, to my own amazement, was the wind hitting my earphones because I was displacing the air in front!, I immediately thought to myself, "I have never being able to go this fast!!!", once conscious of this, my vision started experiencing this eerie effect that I don't know how to better to describe (parallax maybe). Long story short, my very first run got me to beat my personal all time 5k record, the second day went even faster and so on... you get the gist. To be honest, I have had them for not more than a month and I don't never ever write reviews for anything, but these Transport's I thought deserved a mention. In my book well worth $.