I purchased these shoes looking for something warmer than my five fingers for winter. I wear barefoot shoes through out the day so these were not just for running but all daily activities. The fit is perfect with plenty of room for the toes to splay. With a pair of lightweight socks my toes and feet have stayed warm through this mild Chicago winter. My only complaint is that the tongue material is a bit hard and stiff, preventing the tongue of the shoe from staying in place.
All in all I love this shoe. I purchased the grey color ...the sole is super fun and bright...and will definitely purchase another pair in the future.