Mount to Coast Women's R1 san Gradient lenses are darker at

Gradient lenses are darker at the top to block overhead sun and lighter at the bottom for better visibility of your immediate surroundings

Altra added protection to the toe bumper with a thicker TPU overlay

Buckles give an adjustable

The lightweight knit upper and aggressive rocker shape ensure you stay comfortable and propelled forward from start to finish

Mount to Coast Women's R1 san Gradient lenses are darker atTUNEDFIT Dual Lacing System for separate lace adjustment Dual zone ZeroSag midsole inserts with little degradation during long runs LightCELL midsole base featuring excellent lightness and bounce GOFLOW midsole geometry to guide your stride Double layered jacquard upper with 40% recycled polyester Recognized with APMA Seal of Acceptance for promoting good foot health