The ESCAPE ZIP BIVVY bivy sack represents nothing less than a revolution in backcountry shelters, and resolves the main complaint about condensation produced from body heat. With ESCAPE technology condensation is no longer an issue, and you will never again have to choose between staying dry or staying warm. The unique material developed by SOL, experts in emergency survival gear, allows moisture to escape while keeping snow, wind, and rain out. It reflects 70% of your body heat to keep you warm all night long. Waterproof seams, a drawstring hood closure, a side zipper, as well as ample volume allow you to use this comfortable bivy sack as an overbag for your sleeping bag to gain 10°C in warmth or as a lightweight and comfortable sleeping bag down to 10°C on summer nights. The high-visibility orange exterior makes it easy for rescuers to spot you in an emergency, even in areas with high tree cover.