For those who want to sleep with nothing but the sky above, bivy bags offer the purest way to experience nature up close. Crafted from ultralight, high-performance fabrics, Cumulus® bivy bags shield your sleeping bag from moisture, wind, and condensation. Whether you’re tucked into a forest, stretched out on a ridgeline, or nestled in a snow pit, they offer an extra layer of security while keeping you fully connected to your surroundings. Simple, light, and incredibly immersive, it’s outdoor sleeping at its most raw and real.