This 230×260cm large-sized multi-functional disaster relief blanket is specially designed for group warmth in emergency situations. Each blanket covers an area of up to 6 square meters and can provide protection for a family of 3 to 4 people simultaneously. It is made of special composite materials and features windproof and heat preservation functions, with a heat preservation efficiency as high as 93%. The average weight is only 1.75 kilograms, and the volume is reduced by 75% after compression. It has been applied in natural disaster rescue operations in 25 countries, with the maximum allocation for a single disaster reaching 80,000 pieces, making it the preferred warm equipment for family and unit refuge.