Lightweight insulation refers to materials designed to provide thermal resistance while being easy to handle and install. These materials are often used in construction, clothing, and outdoor gear to help maintain comfortable temperatures without adding significant weight. Common examples include synthetic fibers, foam boards, and reflective barriers. One of the main benefits of lightweight insulation is its ability to reduce energy costs by minimizing heat loss in buildings or retaining warmth in clothing. This type of insulation is particularly popular in eco-friendly designs, as it often uses sustainable materials and contributes to overall energy efficiency.