Your tried and true, classic square envelope style sleeping bag. It's square from top to bottom, so no restrictions in the foot box like a mummy sleeping bag. The sleeping bag measures 80 inches long by 32 inches wide. The x-large zippers goes all the way down and around allowing the sleeping bag to be completely unfolded for use as a blanket, quilt or the ability to combine two together to make a queen sized bed. It has a rugged 100% cotton canvas shell and 100% cotton FlannelTech liner, so it is durable, quiet and extremely comfortable to sleep in. Filled with PowerFil synthetic insulation, it is a high lofting synthetic fiber that will retain some insulative properties, even if it gets wet. With a carry weight of just over 5 pounds, it's not out of the realm of possibility of hiking with this sleeping bag if you're looking for a more comfortable night's sleep in the backcountry. It also makes for a great sleeping bag for emergency preparedness and car camping. It packs up relatively small, making it perfect to throw in the car when you need to get out of town fast.