Fleece insulation is a type of thermal material made from synthetic fibers, often derived from recycled plastics. It is commonly used in outdoor clothing and gear, providing warmth without adding significant weight. Fleece is known for its breathability and moisture-wicking properties, making it suitable for various weather conditions. This insulation is typically lightweight and quick-drying, which enhances comfort during physical activities. Fleece insulation can be found in products like jackets, blankets, and sleeping bags, offering versatility for both casual and extreme outdoor adventures. Its durability and ease of care further contribute to its popularity among outdoor enthusiasts.