Nike Free 3.0 Flyknit 2015 Flexible Sole Size 7.5

The Nike Free line of running shoes was originally designed to mimic barefoot running on grass. All shoes in the line are characterized by an extremely flexible sole. Very light, flexible sole. Sock-like. Size is 8 but runs small, fits like 7.5. I am 8 and can wear it only without socks, with a sock it’s very tight fit. Good condition. See pictures