A Flex1 softshell fabric with great breathability and moisture transport with X-open side zip ventilation with mesh when you need to blow off steam these have a gusseted crotch for reduced bulk and comfort in a saddle, that trademark zip thight pocket, and a minimalist Custom-fit waist system for reduced pressure when you’re leaning forward. An anti-slip waistline for a no-tug fit these are designed for long days on the trail starting in spring weather when you’ll appreciate the wind resistance and moisture shedding DWR0 through the heat of summer when you’re running with the vents wide open.