I have a Ruff Wear Mt. Bachelor Pad Dog Bed which has been fantastic and indispensable for travelling throughout the mountains.
http://www.ruffwear.com/Mt-Bachelor-Pad-Dog-Bed?sc=2&category=17
The bottom is a tough nylon and the top is a soft fleece with nylon edging. It has thin padding for comfort which still lays flat. I have another dog bed at home that the middle padding has balled up and gone bumpy.
We place the dog bed on top of all our duffel bags in the back of our SUV and our dog has a nice place to sleep during the car journey.
If there are times when we need to make a stop for our kids and the ground is a little dirty our Ruff Wear dog bed can go on the ground to keep our kids and pups paws clean. The nylon bottom barely holds on to dirt, a quick shake or wipe takes it off.
When we go to the beach the bed rolls up and secures with hook and loop straps which makes it easy to strap to a backpack.
Dog hair easily sweeps off which is nice when we need to use it as an impromptu baby change table or picnic blanket.
5 stars for this product. Would buy again if this ever wears out, although with the quality of the materials that seems unlikely.