I appreciate that the bag it comes with has buckles to tighten and compact the sleeping bag. That being said, it can turn into a bit of a death trap at night when the zipper gets jammed.
I'm on an excursion and have found that if I want to unzip myself to grab my knife to defend myself from an unknown animal or human, it takes me at least 45 seconds of fighting with the zipper to get out. I do like the product and it works well with an emergency space blanket when it gets to be around 25 degrees.