Castelli aimed to craft the warmest booties ever, which involved reimagining their construction. They chose GORE-TEX INFINIUM WINDSTOPPER fleece-backed fabric for windproofing. This fabric not only blocks the wind but also allows more moisture to escape compared to other windproof materials. Castelli added a second layer of Polartec Power Stretch Pro fleece, known for its outstanding loft. The two - layer design is so thick that they used a single - layer construction at the ball of the foot to prevent fabric from rubbing against the crank. These high - cut booties offer extra warmth and decent splash protection. Weight: 266 g
To use these shoe covers, simply slip them over your shoes. Make sure they fit snugly to get the best windproof and warm effects. When wearing, pay attention to the single - layer part at the ball of the foot, and avoid excessive stretching to prevent damage. For maintenance, you can hand - wash them in cold water with a mild detergent. After washing, let them air - dry. Don't put them in the dryer as high heat may damage the fabric.
