The Nike Free Viritous Bright Crimson/Elm/Sail/Blue Legend of Women's Nike Shoe helps keep your foot cool, comfortable and moving naturally with breathable mesh and lightweight, flexible cushioning.A PERFECT FIT FOR SUMMERBenefits Breathable mesh upper helps keep your feet cool Bootie construction for a snug fit Natural motion outsole for barefoot-like flexibility Ultra-lightweight Flywire cables for a dynamic, glove-like fitNike Free OriginsAfter learning that Stanford athletes had been training barefoot on the university's golf course, three of Nike's most innovative and creative employees set out to develop a shoe that felt natural and weightless, similar to bare feet. In 2002, they examined a group of men and women with pressure-measuring insoles taped to their feet, using high-speed cameras to capture images of each foot in motion. The team spent eight years studying the biomechanics of shoeless running. The results yielded a profound understanding of the foot's natural landing angle, pressure and toe position, allowing Nike designers to build an unconventional and flexible running shoe from the inside out....The Nike Shoes more colors