The rectangular shape is like your bed at home: spacious and comfy, fits most campers up to 6.5 FEET. Size: 90.5 x 32.3inches, 20% larger than most adult sleeping bags on the market, providing more room to stretch or roll over. Flannel liner is very soft, gives you a cloud-like skin feeling and will retain heat more. The flannel sleeping bag is quite warm, soft, comfortable, skin-friendly and breathable. On warm nights, unzip it and use like a blanket.