EXCEPTIONAL FLEXIBILITY FOR A BAREFOOT FEEL Designed with insights from elite female athletes, the ultra-light Nike Free Advantage Women's Training Shoe offers the super-flexible support, breathability and multi-surface traction you need for any training regimen. Flexibility Flex grooves along the length and width of the midsole increase flexibility and articulation, allowing the foot to easily move in any direction. Grooves in the forefoot allow toes to engage for grip and improved balance, while those in the heel separate on impact for effortless cuts and changes of direction. And the no-sew construction eliminates stitching for even more flexibility and comfort. Support The seamless upper features mesh and synthetic materials that are bonded together to create a lightweight, breathable one-piece upper that delivers a supportive fit. An outer layer has strategically placed large perforations for flexibility and smaller ones in areas that demand extra support. Lightweight Cushioning The resilient, durable midsole provides ample lightweight cushioning. More Benefits Rubber pods on the heel and forefoot for excellent traction Seamless interior for reduced irritation and a comfortable fit Gilly lacing system for a snug, locked-down fit that adapts to the foot for comfort Molded heel for extra support