I saw so many reviews from experienced runners, and I wasn't sure how it would be for me - I was buying these shoes as my first athletic shoes in years and am just starting to get back in the gym. I hate running shoes. I went in to get professionally fitted (twice!) and they couldn't find one that fit. Ugh to running shoes... I decided these would be more flexible and fit better since they weren't structured. Actually, the arch is structured and it's the only part that's remotely uncomfortable. Otherwise, these are perfect!! It took a little getting used to the change in stride, but it's so much better! My ankles feel much more stable than traditional running shoes. All in all, these feel like they're made for me and my couch-potato body in transformation.