Thing is though, I don't use one for dedicated stand alone sleeping, it's a supplement to my heavier bag for warmer nights or wrap up inside on colder, always worked well for me. Maybe I"m just used to them from back in the Army days...the Woobie it nice, I've seen them but never used them, but for $100+ ($140?) it should be. You can get the poncho liner for less than $20 used or just over $20 new and weighs about 8 oz more. Not bad for the money.