The Nike Free Ace Leather 'White Black Ghost Green' is a mixed-media take on the iconic barefoot-inspired runner. This model includes a leather forefoot, a synthetic leather midfoot strap and a neoprene collar for comfortable support. White and black split the shoe, complemented by the brand's Ghost Green hue on the lining, pull tabs and Flywire cables. Predictably, a Free sole unit is installed below, promoting natural flex through each stride.