Popular styles and designs of sofa beds vary, offering a range of options to suit different preferences and needs. Here are some popular styles and designs of sofa beds:

1. Mid-century modern sofa beds: These sofa beds feature clean lines, subtle forms, and tapered legs, reminiscent of the 1950s and 1960s .
2. Convertible sofa beds: These sofa beds have pull-out mechanisms and adjustable backs, making them easy and quick to convert into beds .
3. Modular sofa beds: These sofa beds offer flexibility and variety with various parts that can be changed to create a bed or a seating space .
4. Chesterfield sofa beds: These sofa beds have plush leather upholstery, curled arms, and deep button tufting, giving them a striking and classic look .
5. Victorian-style sofa beds: These sofa beds feature curved backs, carved wood accents, and luxurious materials like velvet and brocade, creating an elaborate and magnificent design .
6. Traditional pull-out sofa beds: These sofa beds have a pull-out bed frame and plush mattress tucked beneath the cushions, providing a convenient and comfortable sleeping space .
7. Futon sofa beds: These sofa beds, inspired by Japanese design, have a backrest that can be folded down to create a bed. They are often simplistic in style and popular for small spaces .
8. Sectional sofa beds: These larger sofa beds can be separated into sections and used as a sleeping surface. They come in both traditional and contemporary designs .
9. Murphy bed sofas: These sofa beds have a bed that is often maintained upright inside the sofa and can be easily lowered when needed .
10. Daybed sofa beds: These hybrid sofa beds serve dual purposes as a sofa and a bed. They are popular for smaller rooms or home offices due to their compact size .
11. Multifunctional sofa beds: These sofa beds offer additional features such as built-in storage or the ability to convert from a sofa to a bed with ease .