Extremely comfortable. Might take you a little bit to get used to the Velcro/straps, but these shoes are awesome. Feels like you're wearing socks outside. Highly-recommended. However, Im giving it four stars because they do feel like they run slightly narrower than most Nikes - the padding/sole also doesnt feel as thick or as bouncy as other Nike Free sneakers that are truly made for running. These would make great walking shoes though.