I own the whole system, the pillow, the 4 foot pad and the sitpad. The pillow works very well connected to the sleeping pad. I have only used it a couple nights so far. A lightweight system, but I haven't got rid of my Prolite just yet. I want to make sure the Montbell pads are durable. I don't think I would like the pillow nearly as well, if it wasn't connected to a pad.

Jon