Nike lunarstelos mens running shoes the nike lunarstelos mens running shoes utilise a deep hot knife cut flex grooves to the mid and outsole alongside nikes dual density cushioning system delivering a thoroughly natural ride with lasting comfort mens running shoes lace up breathable mesh upper dual density midsole hot knife cut flex grooves no sew overlays supportive moulded heel durable outsole rubber at heel and toe bluegreycrims 9 44