The Nike Free 4.0 Print
Dark Grey/Black/White of Men's Nike Running Shoe
features a seamless mesh upper and deep flex grooves for ventilated comfort and flexibility over any distance.
BREATHABILITY AND NATURAL MOTION
One-piece, seamless mesh with synthetic overlays for breathability and lightweight support
Phylite midsole that's tough enough to double as an outsole for cushioning and durability
Deep, diamond-shaped flex grooves for flexibility and a natural feel
Outsole rubber in high-wear areas for durability
Nike Free Origins
After learning that Stanford athletes had been training barefoot on the university's go-lf 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