The Nike Free 5.0+ Women's Running Shoe provides the foot strengthening benefits of natural motion, along with the cushioning, traction and underfoot protection of a traditional shoe. FLEXIBILITY The flex groove outsole-made up of deep cuts along the length and width of the midsole-enhances natural range of motion, encourages a smooth, efficient stride and helps maintain stability. LOW-PROFILE FEEL A low-profile midsole delivers a natural barefoot-like feel. It features the highest offset offered by Nike Free running shoes, with an 8mm difference between heel and forefoot height for greater cushioning while still promoting a natural stride. Plus, the Phylite material in the midsole is tough enough to double as an outsole, dramatically reducing the shoe's overall weight.