Stay protected in unpredictable outdoor conditions with this waterproof bivy-style sleeping bag cover manufactured by Tennier Industries under the NSN: 8465-01-547-2644. Designed for camping, hiking, backpacking, and survival situations. Built with a breathable waterproof outer layer, this cover helps shield your sleeping system from rain, wind, and ground moisture while still allowing internal moisture vapor to escape for improved comfort. Engineered for compatibility with modular sleep systems, this cover is designed to fit over patrol and cold-weather sleeping bags while still packing efficiently into a compression sack for easy transport. Heat-sealed seams add an extra layer of protection, helping reduce water penetration in wet environments. A dual-zipper ventilation system allows you to adjust airflow as needed, making it adaptable for both cold and mild weather conditions. Whether used as part of a full sleep system or as a standalone protective cover, it is built for dependable performance in outdoor and field environments. Ideal for camping trips, backpacking adventures, emergency preparedness kits, and outdoor survival gear setups, this waterproof sleeping bag cover is a reliable layer of protection when conditions become unpredictable.