I purchased this hammock during recent sale. For the past (3) weeks I have slept in it for 18/21 days. The first week temps over night were only mid 30 deg and I only needed sweatpants and sweatshirt, warm and cozy over night. The second week and this week over night temps have been low 20 deg, I have added a light weight sleeping bag inside this hammock. What is great about this hammock is that I no longer need an under quilt or over quilt for winter camping. Actually since I sleep outside at min 5 nights a week (due to back problems hammock is only way I can sleep without pain during the day) this is the best winter set up I have found. I own over dozen hammock and Grand Trunk is the best due to quality and the fact it does not stretch like the other name brand hammock. I have a permit hammock stand at my house in the back yard. I have used hammocks for over 20 years ever since my son stared camping with Boy Scouts and our troop only uses hammocks.