Made from tear-resistant, aluminum-coated polyethylene, this bivvy reflects 90% of your body heat back to you, providing life-saving warmth, and is sealed to protect you from wind, rain, and snow. Ultralight and compact, the Emergency Bivvy XL easily fits two people, meaning you can pack one bivvy bag as protection for both of you. At only 5.8 oz., this two person bivvy is a small yet potentially life-saving addition to your survival gear, car, home, bike bag, hiking pack, and camping gear. When turned inside out, the bivvy bag doubles as an emergency blanket, so you can wrap yourself in its heat reflective warmth while setting up camp, watching soccer games, or enjoying the stars. With this bivvy, you’ll have peace of mind knowing you’re prepared with the emergency shelter that has saved lives in the harshest outdoor conditions.