If youre riding without fenders you know that the lower legs get wheel spray from both front and back and are one of the hardest spots to keep dry so castelli made the lower part of this leg warmer with waterproof reflective fabric so that the spray will just run off you wear this castelli tempesta partial waterproof leg warmer with your favourite shorts underneath the tempesta 34 pant and over your waterproof booties you get ventilation under the pant and because the warmer is placed ov