I ordered the Short version which is very light, weighing only 9oz. When I got it, it was way shorter than I expected. I'm 5'9" and it doesn't even reach my knees when laying on it. I found that this doesn't really matter though since you really only need to insulate your upper half when sleeping. If your legs get cold, you can just throw some extra clothes under your legs. I like how tight you can roll up the pad. Fits very well between your main pack and the top pack portion of your bag. I role up my tent poles inside this pad and it works very well.