What Our Gearhead® Experts Are Saying:“If you’re heading out in cold conditions, the Genesis 0F is a solid, eco-conscious choice. The recycled TechLoft insulation provides plenty of warmth without going overboard on bulk, and the dual zipper system makes it easy to vent when the night isn’t quite as frigid as expected.”Built for nights when the temps dip toward freezing and below, the ALPS Mountaineering Genesis 0F Sleeping Bag combines dependable insulation with sustainable construction. The outer ripstop shell, inner liner, and TechLoft Micro insulation are all made from 100% recycled materials—keeping waste out of landfills while keeping you warm in the backcountry. Its roomy rectangular shape offers freedom of movement, while the two-way zipper and footbox venting provide options to regulate heat. A compression stuff sack helps you manage pack space on winter treks, and thoughtful details like a secondary zipper make it easy to sit up or adjust airflow inside the bag. Whether you’re camping on crisp alpine nights or setting up basecamp for multi-day tours, the Genesis 0F ensures warmth, comfort, and a lighter impact on the planet.