There are several benefits to using a 100% polyester microfiber duvet. Microfibers are much finer than regular fibers, meaning they can trap more heat and insulate better. This makes them ideal for use in duvets, as they will help to keep you warm and cozy all night long. Additionally, microfibers are very breathable, so you won't have to worry about sweating or feeling too hot under the covers. And because they're so lightweight, polyester microfiber duvets are also easy to clean and care for.