Temperature range of 25-45+ degrees. Great shoe for shoulder seasons. Say goodbye to shoe covers, and say hello to the 45North Fasterkatt RD Cycling Shoe. Designed specifically for wet winter athletes, the Fasterkatt is the ultimate solution for water resistance, moisture regulation, and comfort in a performance cycling shoe. Constructed with a waterproof membrane and rubberized textile shell that extends above the ankle, the Fasterkatt delivers unrivaled weather protection in the wettest and muddiest of conditions. 45North’s proprietary insole is built with arch support and uses heat-reflective aluminum with wool felt to keep your feet warm. The Fasterkatt is also the first cycling shoe to use microglass outsole rubber technology to enhance surface traction while walking or running on slippery surfaces.