Made of advanced, weather resistant materials, the Intense 3-Season Sleeping Bag provides warmth and comfort in even the harshest environments. It's perfect for spring, summer, fall or even winter in milder climates, with a temperature rating of 41 degrees Fahrenheit. Spacious yet easy to pack, this versatile bag comfortably sleeps a single individual up to 6'6", while packing away in the included drawstring stuff bag to a compact 15" long x 7" in diameter. It's made of waterproof, rip resistant 190T polyester with plush m2 hollow fiber filling and a sturdy stainless steel zipper. There's even a drawstring head closure for head and face warmth. At just 45 oz, it won't weigh you down on the trail, and the stuff bag includes a handy shoulder sling for easy transport.