Shed the day's stress as you free yourself in the liberating ride of the Nike Flex 2013 Run! ; Successor to the Flex 2013 Run, SKU#7925447. ; Ideal for the neutral runner looking for a distance trainer that offers lightweight cushioning and multidirectional flexibility for a barefoot-like training experience. ; Breathable, lightweight sandwich mesh upper. ; Synthetic overlays provide light support. ; Lightly padded tongue and collar for added comfort. ; Breathable fabric lining for a great in-shoe feel. ; Full innner sleeve envelopes the foot for a snug, secure fit and feel. ; Molded EVA sockliner for light underfoot cushioning. ; Phylite delivers a resilient ride and is durable enough to double as the outsole. ; Phylon core is soft and resilient for a smooth, comfortable ride. ; Articulated, full-length flex grooves for enhanced flexibility that promotes a more natural, efficient range of motion. ; Environmentally-preferred rubber is strategically placed along the outsole for increased traction and added durability in key wear areas. ; Imported. Measurements: ; Weight: 10 oz ; Product measurements were taken using size 12, width D - Medium. Please note that measurements may vary by size.