One of the main needs when you ride your bike in cold weather is keeping your feet warm. Castelli’s Estremo Shoe Cover will keep your feet warm in weather that plummets below freezing. The Estremo is designed with two layers to make it Castelli’s warmest bootie ever. The GORE-TEX INFINIUM fleece-backed fabric blocks wind yet lets more moisture escape than any other windproof fabric. The Polartec® Power Stretch® Pro™, another fleeced-backed fabric, is made with strong elastic fibers creating a shoe cover that maintains its shape around the shoe. The Estremo will always provide an exact fit around the cycling shoe, no material will bunch up. The dual surface fabric absorbs sweat and wicks it immediately. The Estremo shoe covers stay dry. Comfort and aerodynamics create a shoe cover designed for performance riding in cold weather. The Aqua Guard zipper seals the shoe cover, so no water or cold wind gets into the booties. A single-layer construction was added by the ball of the foot in order to avoid fabric from rubbing the crank.
