She was sitting in a sleeping bag outside the tent drinking coffee
We took two tents, sleeping bags, a folding table and some chairs, air-mattresses, some fishing tackle, stove, pots and pans and many other useful things.
We packed our sleeping bag and tent and went camping.
sleep in a sleeping bag
I slept in sleeping bag when I was in moutains.
We got into our sleeping bags in the tent and told stories until we went to sleep.
The tourists were waiting with their backpacks and sleeping bags.