These emergency blankets keep you warm, good tool for personal survival, emergency etc. Emergency blankets are mainly used in cold places to prevent death from hypothermia. There are two main ways to keep warm. One way is to add a warm layer. The warm layer is usually some fluffy material. Features - Color:Golden,Silver.- Material:PET.- Size:210.00X140.00X0.50cm/82.53X55.02X0.20in.- Used in a low temperature environment, it can keep its own heat difficult to dissipate.- Silver make it easier for rescuers to discover. It is actually one of the survival equipment in the wild.- An emergency cold-proof blanket, which can be used as a blanket during rest to isolate the outside air and achieve warmth.- Lightweight and folding, easy to collect and easy to carry, take little space.- Suitable for outdoor exploration, survey, tourism, and more. It can effectively keep warm and first aid.Packing list: 4 x Emergency Blankets