A sleeping bag is a padded bag you sleep inside. Unroll the sleeping bag.
It works by trapping air, so squashing the filling under you loses most of the warmth. A sleeping bag is rated by temperature, and the comfort rating is the one to read.
1nounsleeping bagA padded bag you sleep inside.
“The sleeping bag was rated for weather they never met.”
sleeping bag is equipment.
Practised in Camping & Outdoors