Thermal emergency sleeping bag liner with whistle

Easy to use – just pull out of the stuff sack, unroll and climb inside.
This sleeping bag can be used as a sleeping bag liner to keep your body temperature. Small and lightweight, easy to carry and store.
26um extra-thick mylar material, waterproof and reusable. It can be folded up and easily fitted to your backpack for your next adventure. A must-have tent camping gear when hiking and going for outdoor trips. 
Emergency bags are made from durable reflective polyester film that can increase your body temperature during cold nights. 
Size: 210 x 90 cm
Color: army green, orange