The Coleman Heaton Peak 30 Degree Rectangular Regular Sleeping Bag is for use in cold weather. The rectangular shape gives you more square feet for more leg room. For 30 degree temperatures, the cover is made from polyester, and the liner from cotton flannel. The insulation is just right for cold weather at 64 ounces Coletherm fill. Measures 33x75 inches. The Ziplow no snag zipper, and roll control system are great for quick and easy rolling, and folding. Quick cord system provides simple and secure no tie storage, and the integrated pillow sleeve connects to the cuff to prevent your pillow from getting away from you at night.