Emergency blankets, also known as space blankets, are lightweight, reflective sheets made from a thin plastic material. They are designed to retain body heat in emergency situations, making them essential for outdoor activities, camping, and survival kits. Their shiny surface reflects up to 90% of body heat, helping to prevent hypothermia in cold conditions. These blankets are compact and easy to carry, often folded into small packages. They can also be used for other purposes, such as signaling for help or providing shelter from wind and rain. Emergency blankets are a valuable tool for anyone venturing into the wilderness or facing unexpected weather changes.