BOOST: Boost is an industry leading and revolutionary cushioning technology which gives the ultimate energy return. BOUNCE: a lightweight elastic foam midsole that provides a fast, bouncy and comfortable ride. ENGINEERED MESH: Lightweight and breathable material for higher performance ENGINEERED MESH: Breathability and support in specific areas where needed. Primegreen: This product has been made with Primegreen: a series of high-performance recycled materials. REFLECTIVE STRIPES: So you want to run in the dark. Work goes late and you just can't get out for your daily 5km before the sun goes down. You need to be seen with reflective stripes