I originally accidentally got the navy blue shoes with the "fashion shoes" by accident before going to university and didn't have time to request an exchange. However, I found them quite comfy so I thought it was worth getting another pair to have them in black. That being said, they weren't the exact same mold, and as a result I've realized that the navy blue ones are more comfy bc they have more of a cushion pattern on the sole, while the black ones are a bit more spikey. In the end, they serve the same purpose, but you should still be cautious that they don't all have the same feel.