******This brand recommends to size up one die in this style***** tag says 39 or US 7.5 These are pre owned. Named after one of the fastest and most athletic fishes in the ocean, the Marlin comes in just after 18 months of conceiving the Condor. The Marlin is designed for those days when you have performance in mind. Light and dynamic yet comfortable for everyday users. The Marlin is about perpetual improvement in mind. Performance-oriented, the Marlin is adjusted for intense runs. It provides lightness and dynamism.