4 Pack. Individually Folded and Sealed, NYKKOLA brand stands for quality Provides compact emergency protection in all weather conditions Retains/reflects back 90 of body heat Made of durable insulating mylar material designed by NASA for space exploratio Reusable, waterproof and windproof Emergency thermal blanket to be used as emergency shelter. Also great for camping, hiking, and surviving the cold outdoors. Excellent as liner of sleeping bag.