Microlite is a very small and lightweight material that is often used in building, especially for things like insulation. Think of it like the smallest and lightest bricks you can imagine, but instead of building big walls or houses, they are used to fill in small spaces, like the walls of a small building or the inside of a jacket to keep you warm. Microlite is made up of tiny fibers that are tightly packed together, which makes it very good at trapping air and keeping things warm or cold. It's so light that you can barely feel it, and it's also very soft, a bit like a fluffy cotton ball. Overall, microlite is an amazing material that helps to keep us comfortable by providing insulation in our homes and clothes.