The Nike Free Ace Leather
of Men's Nike Training Shoe
combines a leather upper with deep flex grooves in the outsole for premium support and a natural ride.
Leather upper with molded elements and perforations lend a supportive fit and ventilation
Midfoot strap provides a secure fit
Full bootie design wraps your foot for premium comfort
Phylon midsole for lightweight cushioning
Deep flex grooves allow your foot to move more naturally
Rubber pods in the outsole enhance traction
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