From a family of all-mountain AllTracks ranging in flex from 130 to 90, the stiffest flexing 130 Pro features sidecountry-friendly Posi-Block hike/ski technology and Sensor Grid, visible on the shell, designed to reduce weight while increasing torsional rigidity. Other details include an OptiSensor 3D Thinsulate liner, grippy soles and the option to use interchangeable rockered soles. Available with either a 100 mm or 102 mm last.