Special Technologies: PROFOAMLITE: Extremely lightweight EVA designed to cushion your landing and propel each step. The upper of this shoe is made with at least 20% recycled materials as a step toward a better future. The Protread rubber outsole is designed for distance and enhanced with a bold paint line and cushioned tooling. The breathable mesh uppers are ultra lightweight, while the comfort collar locks down for a secure fit during workouts.