We love to drive on the rocks be when it comes to camping out, we prefer a little space between us and the hard stuff. When we camp out, we use Trail-Gear camping pads under our sleeping bags. You have seen these same camping pads in stores for twice the price. Each pad includes a stuff bag for easy storage. Sizes listed below indicate sleeping area. Actual overall size is slightly larger.

Trail-Gear recommended heavy weight 1.5" thick camping pads:
77" X 25" X 1.5", Big Boy, $39,
77" X 57" X 1.5", Double Wide (sleeps two adults), $69
Inflatable Pillow, $6

Ultra light weight pads, 3/4" thick, great for backpacking:
45" X 18" X 3/4", $24
61" X 18" X 3/4", $30
69" X 18" X 3/4", $35

http://www.trail-gear.com/images/pad-225.jpg
http://www.trail-gear.com/images/pillow-225.jpg