ULTRA LIGHTWEIGHT COMPACT SLEEPING BAG THERMAL BOGABOO : Made out of ultra-lightweight HeatEcho Thermal , this thermal survival blanket sleeping bag weighs just 384 gram. It also compresses into a tiny oversized stuff sack, so you can reuse and carry our emergency sleeping bags with your survival kit everywhere you go. Use as a sleeping bag liner and raise your body temperature by 15°! Outer material: cire water repellent parasit Inside material: thermal Waterproof / no : waterrepelent (just splashing water)) Zipper: jk Zipper leaf: jkk Screen printing: rn (does not disappear when washed)) Strong at what temperature: 15 degrees