Features: Windproof and water-resistant, very comfortable. Stored in a pouch, lightweight, compressible and portable, very easy to carry and use. 15D nylon material makes it breathable, durable and reusable. Composite heat-reflective aluminum coating reflects body heat and keeps you warm in the low-temperature environment. It is multifunctional, also can be used as a ground mat and cover blanket. Suitable for camping, hiking, traveling and other outdoor activities.