These sleeping bags protect an individual much more than the basic outdated space blankets. The bags are waterproof and windproof. It doesn't have the openings on the bottom which is where most of the heat is lost in the emergency blankets. Don't settle for anything less.Package Included： 1Pcs X Emergency Blanket

• Made from polyester, retain 90% of your body heat
• Expanding size is 2.1 x 1.3 M
• Foldable and waterproof, light weight and easy to carry
• Silver blanket has a good effect of heat preservation and reflections
• Suitable for outdoor travel, hiking, climbing, cycling, household and automobile heat insulation

Made from polyester, retain 90% of your body heatGaosaili