sleeping mat

plural sleeping mats

1. A thin mat used to insulate a sleeper from the ground when sleeping outdoors.

   1 more example

   The natives followed him to where a great tree overhung the palisade, and as Tarzan leaped for a lower branch and disappeared into the foliage above, precisely after the manner of Manu, the monkey, there were loud exclamations of surprise and astonishment. For half an hour they called to him to return, but as he did not answer them they at last desisted, and sought the sleeping-mats within their huts.

   1913, Edgar Rice Burroughs, The Return of Tarzan, New York: Ballantine Books, published 1963, page 127