The filling material is 400GSM the packaging weight is 4 pounds and the rated temperature is 32-77℉ (0-25℃) degrees Fahrenheit ★If you are not satisfied please contact us we will serve you wholeheartedly until you are satisfied 1. Feel the difference-Mooncast super comfortable sleeping bag is designed to ensure that you can get a good and relaxing sleep after a tiring day of hiking hiking traveling or any other exploration. 2. Designed for cool/cold weather-our sleeping bag is designed for 32-77℉ (0-25℃). In addition these bags have a waterproof and weatherproof design to keep you warm and protect you from moisture even under extreme conditions-this is achieved through double filling technology. 3. Size-The envelope-shaped sleeping bag measures 33 x 87 inches (W x D) suitable for most campers up to 5 feet 11 inches. 4. 100% risk-free satisfaction guarantee-we also provide you with a 100% risk-free satisfaction guarantee so you can buy with confidence. However we are pretty sure that you will be impressed by its ability to stay warm in winter.