Double layer polyester fiber fill, quilt through construction, and a drawstring around the hood part. Great way to experience the outdoors in relative comfort. Took it to camping at powell springs.

Outside of that, it's solidly constructed. Holds up in the washing machine and the dryer. Drawstring up top to seal in more body heat.

Zips up and down smoothly. I like the compression bag it comes in. Difficult, but not impossible, to squeeze it back into the storage bag.

If you ever get the carrying case to close with the sleeping bag inside of it again, you deserve a large cash award. On top of that, the bag i received is way shorter than described.