SOS Emergency Blankets: Stay Warm, Prepared, and Portable! Dual-sided aluminized Mylar for ultimate warmth and shelter. Ideal for survival kits, camping, and emergencies. Highly packable and pocket-sized, making it perfect for outdoor adventures. Each pack includes 4 blankets for versatile use - ground cover, sleeping bag liner, and more. Constructed with military-grade 12-micron aluminized polyethylene Mylar, sized at 52"x82". Be ready for extreme conditions with this must-have item. Backed by MEKKAPRO's commitment to quality and affordability!