Emergency aluminum emergency sheet set (10 sheets) useful in emergencies. An emergency sheet is a cold-weather sheet made of thin, heat-retaining material. It is also called a survival sheet or rescue sheet. It is effective in maintaining body temperature during disasters, accidents, and power outages in cold seasons. The silver sheet reflects heat, so it warms the body with radiant heat, and the outside is effective in preventing direct sunlight in midsummer. It is also resistant to tearing and abrasion, and is difficult to tear even when pulled. Thank you for viewing.