A sleeper sofa is a space-efficient way to put guests up for the night and have somewhere to sit during the day. But the mattresses that come with sofa beds can be thin and uncomfortable.

Fold-out designs involve the mattress folding out from inside the sofa. These designs are typically more sturdy and have thicker mattresses, making them more comfortable for longer stays.

A sleeper-sofa mattress upgrade: Milliard 4.5-inch Memory Foam Replacement Mattress It doesn’t take much to improve upon the busted, old mattress—or the disappointing new one—lurking in your ...

Here are the details on Burrow's newest launch, including its mattress materials, size, and what to know before you consider adding it to your space. Burrow's new sleeper sofa features an extra ...