You may not need to use it for a while, but be prepared, you can take it with you, keep it anywhere, put it in your car, backpack, first-aid kit, etc., and you can reuse it. Designed for emergencies and survival, it can reflect 90% of body heat and the orange is eye-catching. It's a must-have in emergency situations, and you never know when it's going to come in handy. It can also be used for other functions such as rescue blanket, ground cover, rescue or emergency signal, rain poncho, rain cloth or awning. The rescue blanket's innovative PE aluminum foil material gives this lifesaving bag a very high tensile strength , which allows for ultra-lightweight tensile and tear strength effects; aluminum reflective coating + durable PE film + anti-scratch coating + colored anti-oxidation coating = 90% insulation + 0.45mm thickness + tear resistance + waterproof and reusable. There is an emergency whistle and a quick hook on the outside pocket. The tents needed for mountaineering, fishing, rock climbing, boating, hunting, camping, trail running, tactical gear, and first aid travel can be used to craft the best first aid kit. - The space blankets come with 2 rescue blankets and 2 survival whistles. Designed for emergencies and survival, use the 120dB survival whistle to cut through wind and trees, alerting emergency responders up to 1 mile away. Its eye-catching orange exterior makes it easy for rescue workers to find you. Straps can be used to attach or repair gear without breaking. Super light and compact 2 pack emergency sleeping bag Durable and tear resistant Multifunctional survival whistle