A soft, 100% cotton flannel lining provides a cozy feel, while anti-snag zippers allow for easy access and ventilation—they unzip from inside or outside, top or bottom, making it convenient to adjust during use. Designed for 3-season camping, it offers warmth in various conditions, with extreme temperature rating of 0°F, limit 15°F, and comfort 30°F. A draft tube along the zipper helps retain body heat, keeping you warm even in cooler weather. Measuring 90 x 39 in., it’s spacious enough for campers up to 6 ft 7 in, ideal for side sleepers or those who prefer extra room. It’s machine washable too: simply use cold water, mild detergent, and a gentle cycle, and launder the flannel surface to protect the shell’s waterproof coating. For added versatility, you can zip two bags (left and right) together to form a double sleeping bag, or fully open it to convert into a sleeping mat, meeting different outdoor needs.