Most blankets require modification to use them as full up top quilts or under quilts, severely limiting your options straight out of the box.
Out of the box you have a 5-in-1 piece of gear. Nothing can stop you! The Puffle can be a TopQuilt, UnderQuilt, Sleeping Bag, it's Linkable and Stackable!!!
Not to mention you could transform it into a sleeping bag in seconds.