This SOL Emergency Bivvy includes a Rescue Whistle and Tinder Cord. The lightest emergency bivvy on the market, weighing a mere 100 grams and packing down incredibly small to a size of a can, taking up as little room in your bug-out bag or survival kit as possible. You can keep warm, signal for help and start a fire with this incredible emergency and survival product. The waterproof, windproof material reflects 90% of body heat while sealed seams keep out rain, wind, and snow. you can start a fire with the tinder cord included on the stuff sack. The bright orange is highly visible, and the rescue whistle signals for help. Use the SOL Emergency Bivvy as a sleeping bag or a blanket to ensure you survive the cold until help arrives.