Once your toes freeze on a ride, there's no going back, so it's important to keep them warm from the moment you clip in. Mavic's Ksyrium Pro Thermo Shoe Covers are easy-to-use toe savers, with a waterproof membrane, water-repellent coating, and warm synthetic fabric. The membrane and DWR coating combine to keep water and snow on the outside, and the Warm Shell fabric traps heat so your toes don't freeze into popsicles. Reinforcements at the toe and heel provide extra protection, while openings at the front and back of the Exo Grip sole ensure the booties don't interfere with your cleats and let you walk comfortably. Mavic incorporates reflective highlights into the Pro Thermo's design, and finishes them with a locking rear zip that makes it easy to get this shoe cover on and off.