WATERPROOF AND WINDPROOF: The polyester foil blanket is resistant to high temperature, waterproof and windproof, and can well absorb the heat of the human body. Very suitable for camping, hiking, backpacking, and survival in the cold outdoors. REFLECTIVE FUNCTION: The emergency insulation blankets can be used as a temporary emergency shelter. With the reflection function, it can also send emergency signals. CONVENIENT TO CARRY: These survival rescue emergency blankets are convenient and practical to carry, put them in a sleeping bag, and their warmth retention effect is very good. LIGHTWEIGHT AND PORTABLE: Each insulation blanket is individually packaged, which is very compact and light. The blanket is small enough to fit easily in the palm of your hand, and it is durable, waterproof, windproof, and moisture-proof. The blanket is big enough to cover even the tallest person and is equally effective for children. MULTIFUNCTIONAL: Innovative uses beyond survival-hundreds of amazing uses, not limited to emergencies.Used as a floor tarpaulin, covering or arranging pet boxes to keep warm, keeping the house-baked in winter and cool in summer, keeping the hot sun away from plants, and have many other uses in hiking, camping, gardening, sports, marathon, indoor and outdoor.