A mantle is a layer of material that covers or envelops something. In geology, the Earth's mantle is the thick layer of rock located between the crust and the core. It is composed mainly of silicate minerals and extends about 2,900 kilometers deep. The mantle plays a crucial role in tectonic activity and the movement of tectonic plates. In fashion, a mantle refers to a type of cloak or outer garment that drapes over the shoulders. Historically, mantles were worn for warmth and protection, often made from heavy fabrics. Today, they can be stylish accessories, adding elegance to various outfits while serving practical purposes.