Thermal Space Blanket for Outdoor Survival Especially for emergency use This product is an thermal blanket specially designed for outdoor activities. It is made of metalized polyethylene material, which can reflect 90% of body heat to keep warm. Besides, this space thermal blanket has many other practical functions and is favored by outdoor sports enthusiasts and athletes. Lightweight and portable, the foldable pack of 4 space blanket can be placed in any pocket or package to accompany you in every adventure and sports event. Durable Keep Warmth Portable Reusable Wind-Proof