Stella McCartney x Wmns AlphaEdge 4D 'Core Black'

A result of designer Stella McCartney's longtime relationship with adidas, the women's-exclusive Stella McCartney x Wmns AlphaEdge 4D 'Core Black' has a sleek, seamless Primeknit 360 upper that expands and contracts for a supportive fit. In a new look for the silhouette, McCartney added a sock-like collar with her branding around the ankle. The midsole is digitally printed using adidas 4D technology, and uses light, oxygen and resin to provide energy return.