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#7925395. 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: 8 oz ; Product measurements were taken using size 8.5, width B - Medium. Please note that measurements may vary by size.