Warm sleeping bag built for reliable rest in harsh outdoor conditions while remaining as comfortable as at home. Key benefits Keeps you warm: Thick hollow-fiber cotton filling provides fluffy, resilient insulation that traps heat and resists compression for sustained warmth. Comfortable against skin: Smooth polyester outer fabric is soft, skin-friendly, and adds another layer of warmth for a restful sleep. Secure fit to stop heat loss: Oversized Magic Paste (Velcro) around the shoulder area prevents gaps and keeps warmth enclosed. Adjustable fit: Elastic bungee cord allows easy, on-the-fly tightening or loosening to match body shape and sleeping position. What makes it stand out Combination of a soft polyester shell and high-quality hollow-fiber fill for a balance of comfort, warmth, and durability. Design details focused on real-world outdoor use: oversized Velcro closure to seal shoulders and a bungee adjustment system for custom fit. Built to perform in rough conditions so you can sleep better outdoors without sacrificing comfort. Function and compatibility Function: Provides insulated, comfortable sleeping protection for outdoor and emergency use. Compatible uses: Designed for camping, backpacking, hiking base camps, emergency shelter, and other outdoor activities where warmth and a reliable closure are important. Materials: Polyester outer fabric (smooth, skin-friendly), high-quality hollow-fiber cotton filling. Performance: Retains warmth effectively through thick, resilient fill and sealed shoulder closure; adjustable fit helps minimize cold spots. Practical scenarios Multi-day camping trip: Keeps you warm overnight in variable conditions while the elastic cord and Velcro let you adjust fit quickly. Wilderness or backcountry use: Durable insulation resists compression so the bag maintains warmth over extended use in rough terrain. Emergency or roadside sleeping: Fast adjustments and a secure shoulder seal help you stay warm and comfortable in unexpected situations. What you get A warm, comfortable sleeping bag that combines a soft polyester shell, resilient hollow-fiber fill, oversized Magic Paste shoulder closure, and an adjustable bungee cord for a sealed, customizable sleep system outdoors.