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They are very firm to sit on but easily fold out and can be pushed ... and a memory foam mattress, this retro-inspired sleeper chair is seriously luxe (and well worth the price tag, trust).

Amazon What we like: Worth noting: With more than 5,000 reviews and a 4.5-star rating, the Milliard memory foam mattress is ...

Instead of the usual folding innerspring mattress, this model features a memory foam sleep surface that's almost as comfortable as the real deal. This sleeper sofa falls right in the midrange of ...

When someone says “sleeper sofa,” I ... but the two foam mattresses are compact enough to nullify the cavernous feel that typically results from pushing two twin beds together.

But if you are curious about buying a new lightweight mattress for your sleeper sofa, then take a look at the Zinus Green Tea Memory Foam Mattress, with prices starting at $399 (MSRP) for a twin ...