Wish I'd listened to all the reviews saying this shoe runs small, because they were absolutely right - I ended up reselling both my 9W pairs and sized up half to 9.5W. Still not entirely sure going a *full* size up to 10W wouldn't be even better? It's an odd feeling, where I didn't really notice any discomfort while actively running, lifting, etc. Only while at rest or doing light activity...specifically, big toes kept hitting the sides before I sized up. I kinda feel like this is one of those purpose-built shoes that's most comfortable when used for its intended niche, and notably less so for general wear? Foot tends to move around unless I tie these fairly tight + use lace lock (fortunately the laces are plenty long enough for it). Do love the designs, especially literal chrome elements, although it's challenging to keep the mesh clean. Never liked running before, but now I enjoy running around in these just cause it makes full use of the foam + air tech. The bounce level is *explosive*, really gives a unique "walking on clouds" sensation that pushes one to keep moving forward. Overall I'd recommend at 4 stars; high price, getting the sizing right is hard, but you really do get a premium product that's unlike anything else. With a less-fiddly fit I would've easily rated these 5 + "very comfortable", and bought more pairs in different colours.