The pros asked for aero shoe covers with weather protection and Castelli obliged. The Soudal Quick-Step Aero Race Shoe Covers are made for a perfect aero fit, while offering wind and rain protection, without unnecessary bulk.
Made from waterproof, PU-coated stretch fabric, they form to your shoes to keep out a high degree of wind and rain, while a silicone gripper at the top of the leg keeps the covers from falling down as you ride. They're also practical, with high durability fabric at the sole and a long zipper for easy on-off.