This is one of absolutely essential bits of kit that should always be kept in your pack. If you find yourself stranded due to accident or injury, or suddenly & unexpectedly exposed to extreme cold then wrap this tough silver blanket around your body to prevent hypothermia. The silver material reflects over 80% of radiated body heat, so it is important to wrap up quickly before you start to cool down. Strong, metalised polyester materials Windproof & waterproof Radar reflective