Safe material: The 4-piece foldable water containers of 10 liters + 5 liters are made of environmentally friendly and safe PE material; they are non-toxic, BPA-free, and odorless. You don't have to worry about health problems. Easy to carry: The water tank is very light, soft, and foldable, which saves space and makes it easy to carry. The portable, foldable water tank holds up to 5/10 liters of water. You can take it with you when you are outdoors or traveling. Leak-proof and stable: Despite its elasticity, the water container is absolutely leak-proof and stable. When filled with water, the container stands stably. Water bags are suitable for water temperatures between -30 °C and +60 °C. Robust and durable: We have made the foldable water tank thicker so that it is more durable, resistant to higher pressure, and does not break easily. The drinking water tank has an opening diameter of 3.5 cm, which can easily be filled with drinking water, beverages, or ice cubes, and the tank is easy to fill and clean. PREMIUM MYLAR THERMAL BLANKET OF HIGH DURABLE QUALITY: Made by precipitating gaseous aluminum on the foil, using the principle of heat reflection to slow down body heat loss and retain up to 90% of your body heat. Effective in preventing hypothermia and shock in an emergency. MULTIFUNCTIONAL SURVIVAL THERMAL BLANKET: Perfect for waterproof, moisture-proof, UV-resistant protection with high and low temperature resistance. It is very suitable as outdoor equipment for both men and women for activities such as hiking, camping, backpacking, and mountaineering. These Mylar thermal blankets can be used as ground cover, sleeping bag liner, emergency poncho, tent, car blanket, camping tarp, for survival against wind, rain, cold, heat, dirt, dust... LIGHTWEIGHT, PORTABLE AND DURABLE SURVIVAL KITS: This thermal blanket is 160 x 210 cm. Heavy, easy to carry and can be stored in backpacks, first aid kits, camping equipment, car boxes or even in your pocket. All individually folded and packaged, well sealed, with excellent water and wind resistance as well as light-blocking effects. PERFECT FIRST AID MYLAR THERMAL BLANKET FOR EMERGENCIES: High-quality, comprehensive first aid blanket for emergencies. It is the perfect gift for men, dads, women, wives, family, friends, the office, school,...