Tourist in MSN, it could also be dubbed a sleeping bag liner. Now, what differentiates one from the other? Hmmmm, gonna have to think on this one.

Over 100 bucks for an insulated quilt is pricey to me as it is simply a blanket made from lightweight material. Down is not pricey from what I have been told and light nylon in ripstop form is common and relatively inexpensive. Silvia believes with fabric, thread and insulation the 100 dollar threshold is easily achievable.