The Gusto has a knitted upper crafted with Ezeefit technology. Ezeefit uppers are engineered with lycra for a snug, lightweight support that hugs your foot for a free, uninhibited feel. The soles are imbued with Athlite technology. Athlite technology soles are the lightest soles in the world and have shock absorption technology to conform to the ground for easy movement of the feet and premium support. Blaze your path with ease and vanquish your boundaries with Gusto.