Key benefits Immediate thermal protection: PE aluminum film reflects body heat to reduce heat loss and help prevent hypothermia in cold conditions. Lightweight, compact and portable: the heat preservation mat rolls up and stores in a small bag so you can fit it in a pack, vehicle or emergency kit. Multifunction survival gear: works as a sleeping sack, warmkeeping blanket and emergency sleeping mat while also providing basic rescue tools. How it solves problems Keeps you warm when temperatures drop by creating an insulated barrier between you and cold air or cold ground. Saves space in your pack or car by rolling into a compact storage bag for quick deployment. Adds basic emergency signaling and firstaid support with a survival whistle and bright rescuers to attract attention. Key features and materials PE aluminum film construction: reflective layer that improves heat retention and resists moisture. Sleeping sack function: designed to provide insulation from cold air for warmer, more comfortable rest during winter camping. Heat preservation mat: doubles as an outdoor sleeping mat or emergency sleeping mat; rolls up for storage and transport. First aid and rescue tools: includes a survival whistle and bright rescuers for signaling and attracting help. Survival travel bag: creative, safe design suitable for harsh conditions and travelready emergencies. Compatibility and performance Compatible with coldweather camping, roadside emergency kits, backpacking and general outdoor use. Performance focused on retaining body heat, insulating from cold surfaces and providing a compact, quickly deployable shelter layer. Durable, lowmaintenance material suited to repeated use in outdoor environments. Practical use scenarios Winter camping: use as a sleeping sack or warmkeeping blanket inside a tent to reduce heat loss overnight. Roadside emergency: keep in your vehicle's emergency kit to protect occupants from cold while awaiting help; use the whistle and bright rescuers to signal rescuers. Backpacking or travel: carry rolled in its bag for lightweight emergency shelter or as an outdoor sleeping mat on unexpected cold nights. What you get and how to store it A PE aluminum film survival system that serves as a sleeping sack, warmkeeping blanket, emergency sleeping mat and heat preservation mat. Includes survival whistle and bright rescuers for signaling. Rolls up and stores in the supplied bag for compact, easy storage anywhere.