COMFORT LEVEL: This sleeping bag is just right for cozying up in temperatures between 20AdegF and 40AdegF. HEAT RETENTION: This sleeping bag&';s hooded feature prevents heat from escaping, so you can sleep soundly and stay nice and warm all night long. FRUSTRATION FREE: No more snagged zippers! The triple-needle stitching on the lining near the zipper means you can zip and unzip this sleeping bag with ease and without any frustrating snags. LINER INTEGRATION: Customize your sleeping experience with the option to add a CORE liner, held securely in place with the interior loops - perfect for those who like to fine-tune their comfort level. SLEEPING PAD INTEGRATION: Say goodbye to slipping and sliding around in your sleeping bag - this one comes with built-in sleeping pad integration that keeps it securely in place throughout the night. MACHINE WASHABLE: This sleeping bag&';s plush hollow core fiber fill is machine washable, making clean up easy peasy! 1-Year Limited Warranty