What sounds better: a warm, cozy bed, or a bag' It's a no brainer. And with the Sierra Designs Women's Backcountry Bed SYN 40 Degree Sleeping Bag, you can take the comforts of your bed into the backcountry. Sierra Designs' revolutionary Backcountry Bed design allows you to sleep comfortably on you back, side, or stomach with the cozy comforts of a comforter. This synthetic fill option from the Backcountry Bed line has EN comfort rating of 40 degrees Fahrenheit, making it ideal for summer camping and backpacking trips. Designed to let you get into that perfect sleeping position, the Backcountry Bed has a zipperless design, which not only reduces weight, but also makes for an easier entrance through the large catenary shaped opening. Within the bag is an integrated comforter that is designed to wrap naturally to your preferred sleeping position. Insulated arm and hand pockets give your extremities a place to stay on cold nights, and hands free foot vents let your toes cool off if they start to get too warm throughout the night. A sleeping pad sleeve keeps the bed securely attached to your pad, so you don't wake up with your tent partner sleeping on your pad while you enjoy the comforts of the cold ground.