The Diadora Nucleo 2 is built to take you the distance in comfort. Powering your stride is Diadora’s energetic Anima foam that increases responsiveness and rebound while significantly reducing weight so you’ll feel light and fast on your feet. Then, the Dnattivo insole takes this shoe to the next level with extra cushioning in the heel, a springy forefoot experience and an internal mid-foot structure to help reduce foot fatigue. Details: Upper: An air mesh nylon and microfiber upper offers maximum breathability and flexibility. The redesigned tongue is secured laterally with elastic mesh to prevent twisting and maintain a snug, personalized fit. Midsole: Boasting a 30% increase in responsiveness and a 20% reduction in weight, the Anima midsole delivers an astonishing 65% total rebound. On top sits a multi-density Dnattivo insole to keep your feet supported, protected and comfortable.Outsole: The Duratech 5000 outsole is a wear-resistant rubber compound that ensures uniform ground traction for a smooth, confident ride.