The mizuno synchro mx mens running shoes boast a brand new design with a two piece midsole that increases durability and comfort for higher levels of performance these neutral cushioning trainers are a versatile choice that suit intense outdoor training just as well as usage indoors in the gym at 280g 98oz they are a comfortable weight and have an airmesh upper that improves breathability and the fit the midsole ensures good rebound and responsiveness and smoothride technology delivers