HOW TO USE EXPED PUMP SACK
It's no contest that the Exped Downmat is the best sleeping mat out there. As a cold sleeper, I would know! It keeps me so warm and I don't wake up feeling sore or achy.
However, many people here have said that it takes awhile to pump up the mat. Initially I experienced the same thing, but I found out that I was inflating the mat the wrong way.
Exped has a tutorial video that shows you how: http://www.youtube.com/watch?v=lGuMLopq370
And now it takes me less than five minutes - I hope this will help you enjoy your Exped Downmat experience even more!