sillies slip on shoe covers are made with 100% silicone that is durable, reusable, and ultra elastic! a translucent and simple design that perfectly matches your city look or outdoor activities. show off your shoes, even on rainy days! the sole’s convex pattern increases friction. works very well on wet surfaces. ideal for rainy days, snow and other seasonal weather conditions.dirt proof. no more worries about damaging your shoes. very easy to clean, just wash them with water and let them dry naturally.