Nights can get cold when you are outdoors, but you don~t have to worry with the Wakeman Outdoors Spirit Lake Sleeping Bag. The polyester shell and lining with a 300g M2 hollow fiber filling provide optimal comfort and ensures that warmth is sealed in for activities like family or car camping, and even for festival camping. When you are finished using the sleeping bag, it easily rolls up to fit into the compression bag to save space and time to keep you enjoying the outdoors.