Wow, I can't imagine all the problems folks are having rolling this up. I find it very easy to get it much smaller than the bag, even rolling just once. Has never taken me more than one try, and never more than 45 seconds, maybe a Minute.
We are talking the Thermarest ProLite, right? Do they ship the same storage bag with the 3/4 length and the full length? Mine is a 3/4, so maybe that is the difference.