This version has been entirely re-engineered to significantly enhance overall support, while maintaining the very qualities that made it an essential neutral running shoe for fluid, long runs. Nucleo 2 offers a unique mix of features, making this the foundational running shoe for every runner, whether expert or beginner. Weighing just 9.7 oz and equipped with an Anima midsole, which offers 30% more midsole responsiveness while reducing weight by 20%, Nucleo 2 ensures a smooth, fluid ride for runners of all levels.