made of PET, which is designed to retain up to 90% of body heat and to weather conditions.Manufactured from the best Waterproof and weatherproof Material for easy storage, retaining or deflecting heat, reusable, waterproof, windproof, moisture resistant, also can be used as ground cover and sun shadeMulti-purpose - Solar Survival blanket for versatile use (hiking, running, skiing, camping, car, explorer, tent footprint, backpack cover, rain poncho, emergency signal, shade cover, emergency shelter)Quality - Strong enough to be reused and cheap enough to be disposed. Perfectly for 's must have.Color: silverMaterial: PETsize: 140x210cmPackage Contents:10 x thermal blanketOnly 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.