Sizing shoes is tricky business — not all shoes run the same, nor are they meant to fit the same. Short of making a trip to the store to try them on yourself, it's a crapshoot. Nike Fit aims to do away with this. Coming this summer to the Nike app, it uses a combination of computer vision, data science, machine learning, artificial intelligence, and algorithms to recommend just the right size for each shoe style. To do this it maps your feet using 13 data points, storing your foot dimensions in your profile so you always get just the right fit, whether you're shopping in the app, online, or at a Nike store.