The XSR designation in waterborne FASTRACK™ XSR stands for eXtended Seasonal Range. This new traffic marking product extends the range of weather conditions available for striping to include the “shoulder” seasons of early spring and late fall. It has an “extended” life span: it is “seasonal” because it can be used in colder weather than previous traffic marking paints; and the product has “range” in the sense that it has opened wider the “window” during which it can be applied.