The Coleman Heaton Peak 50 Rectangular Big and Tall Sleeping Bag is for use in warm weather. The rectangular shape gives you more square feet for more leg room. For 50-Degree temperatures, the cover is made from polyester and the liner from a polyester/cotton blend. The insulation is just right for warmer weather at 48 ounces Thermotech fill. Measures 39 by 81 inches to give the big and tall person more comfortable space. The Ziplow no sag 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.