What Our Gearhead(R) Experts Are Saying:"The Big Basin 15 Big + Tall Sleeping Bag offers the perfect balance of warmth and space. Its hybrid shape keeps me cozy down to 15degF, and the fleece-lined footbox adds a layer of luxury. The ripstop cover is tough enough for rugged adventures, and the two-way zipper is great for venting when the weather warms up."Cold nights are no match for the Big Basin 15 Big + Tall Sleeping Bag. Designed for campers up to 6'6", this hybrid sleeping bag combines the warmth of a mummy design with the roomy comfort of a rectangular bag. Coletherm hollow polyester insulation locks in heat, while the Thermolock draft tube and double-batt quilting construction eliminate cold spots to ensure cozy sleep even in temperatures as low as 15degF. When the weather warms, the two-way zipper provides ventilation options, and the adjustable hood offers a customizable mix of warmth and airflow. Thoughtful details like a fleece-lined footbox and snag-free ZipPlow zipper add comfort and convenience, while the durable ripstop cover ensures season after season of reliable use.