It's lined with a highly water resistant membrane, with a rating of 10,000mm, that blocks the worst of the rain and road spray. A waterproof zip, a high shaft to defend the back of the ankle and a Velcro strap that seals the shoe opening work to prevent leaks as you ride.A competitive edge is added to the shoe by its nylon and carbon composite sole, which is stiff enough to transfer power efficiently to the pedals but offers just enough flex to make walking off bike easy, especially since its inserts will grip the pedals and give you purchase in the mud.Finished off with reflective detailing, in case you're delayed by a mechanical or simply want to extend a perfect trail day past dusk, these close fitting shoes are speedy and protective enough to help you make the most of the cold months and be on top form when the spring hits.A highly water resistant trail riding and racing shoe with an aero cutCoated with a membrane with waterproof rating 10,000mmWith YKK® waterproof zip, high shaft