I bought this shoe after coming home with the ASICS GEL-Kayano 24 Running Shoe in the exact same size. I wore the 24 for a week and absolutely loved them. It had a great, comfortable fit and I could wear it all day if needed. I saw the ASICS GEL-Kayano 23 Running Shoe in the exact same size at practically half the price and decided to get them for a trip we are taking where we will be doing a lot of walking and I needed some comfy shoes. When the 23 arrived I wore them to break them in for the trip. Thank goodness, because the 23 is not the exact same fit as the 24. In the toe area it is tighter. No way I could wear them for a long day of sightseeing. Basically it is just as comfortable everywhere else, but for me the toe area was too tight. The 24 didn't need any breaking in and I have worn it for long days on my feet.