Slab bed

"A large slab of smoothed stone, very uncomfortable and only marginally better than sleeping on the floor." A slab bed is a piece of furniture added in the Vanilla Furniture Expanded - Core module. It serves the function of allowing colonists a place to sleep and recover Rest, or await a medical operation.

It does not require any Research or Construction skill to build.

Strategy
On maps where both wood and steel are unavailable, this can be used as a last resort compared to sleeping spots.