The sheet blankets retains up to 90% of your body heat to keep you warm in the winter nights Our durable advanced aluminized Mylar blankets are perfect for civilian bug out bags, go-bags, and home/auto emergency kits [Space Blanket Survival kit Camping Blanket]Each survival blanket is individually folded, wrapped, and sealed for easy storage and retrieval They are reusable, waterproof and windproof and can also be used for both ground cover and shade These reusable blankets can be used as ponchos, emergency tents, shelters, lightweight tarps, sheets, campers, sleeping bags, window insulation, signal mirrors and other creative applications. [Cold Rescue Essential]Ideal for emergencies when you need to stay warm or protected from harsh weather conditions. For example, sudden weather changes, disasters, earthquakes, rain, snow, hail, etc Material: PET Color: As shown Package Contents: 10 x Thermal blanket Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.