This sleeping bag features a soft 100% cotton flannel lining for cozy comfort during camping adventures. Its anti-snag zippers allow easy in/out and top/bottom unzipping, enhancing access and ventilation, making it suitable for 3 seasons. With extreme temperature ratings from 0 ℉ to 30 ℉, it balances warmth and breathability, while a draft tube along the zipper helps retain body heat. Measuring 90 x 39 in., it’s roomy enough for campers up to 6 ft 7 in., ideal for side sleepers or those preferring extra space. It’s machine washable in cold water with mild detergent on a gentle cycle, and placing the flannel surface in the washer protects the shell’s waterproof coating. Additionally, it can zip with another (left/right) to form a double sleeping bag or open fully to convert into a sleeping mat, adding versatility to outdoor use.