The Best Folding Sofa Bed in 2026: The Koala Sofa Bed, Reviewed

A good folding sofa bed does one thing above all else: it gets out of the way when you need your living room back, and it sets up fast when overnight guests arrive. No grunting, no YouTube tutorials, no bruised shins from a metal frame that swings sideways at 11 pm. We spent time both sitting and sleeping on the Koala Sofa Bed [4th Gen] — across all three sizes — to see whether it lives up to the promise.

The Koala Sofa Bed at a Glance

*Prices shown are RRP starting points and vary by fabric tier (roughly £1,250–£1,595 across the range). Koala runs different sales throughout the year, so check uk.koala.com for live prices before you buy. Every model comes with a 120-day trial, a 5-year warranty, and free delivery to most of the UK (some Highland and island postcodes are excluded).

Why the Koala Sofa Bed Is the Best Folding Sofa Bed

How it works: The FlipBed™ design uses a single-motion flip — the seat cushion rotates flat and becomes the sleep surface, with no gaps and no ridges underneath. Setup takes seconds, and assembly out of the box is tool-free: parts slot, screw, and zip into place with the help of coloured alignment tabs — no Allen keys or screwdrivers required.

How it sleeps: Unlike the thin pads found on most pull-outs, the sleep surface is a full-size Kloudcell™ mattress with a plush integrated topper, so guests get proper support rather than a night on a fold-out frame. On the 3-Seater (King), the mattress opens to 209 cm long by 155 cm wide.

How it sits: The seats are deep and plush with an angled backrest and lumbar support, so it works as an everyday sofa, not just a bed you happen to sit on. Multipurpose pillows work for lounging or sleeping.

Fabrics and care: The exclusive Koala fabrics are removable, hard-wearing and water-resistant (with the exception of the Sandstone and Coastal Moss finishes, which aren't water-treated). The zip-off sleep surface can go in the machine on a cold wash; the outer covers are removable for spot-cleaning or a gentle hand wash rather than a machine cycle, so check the care label sewn into each cover before laundering. There are eight finishes across the Classic and Luxe fabric tiers.

Dimensions — 3-Seater (King):

• Total width: 177 cm

• Total depth (sitting): 104.5 cm

• Seat height: 46 cm

• Seat depth: 63 cm

• Arm height: 58 cm

• Bed mode: 155 cm × 209 cm mattress, 222.5 cm total depth when open

• Total weight: 85.5 kg (arrives flat-packed)

The 1.5-Seater and 2.5-Seater share the same build and mechanism in a narrower footprint — check the product page for size-specific measurements before you buy.

Made responsibly: The frame uses FSC®-certified poplar plywood, and Koala is a certified B Corp. Designed in Sydney, made in China.

Which Folding Sofa Bed Size Is Right for You?

The 1.5-Seater (Single) is the most flexible option for tighter rooms — studio flats, home offices and spare rooms where a wider sofa simply wouldn't fit. It sleeps one comfortably. If you're furnishing a compact space, Koala groups its most space-conscious options under sofa beds for small flats.

The 2.5-Seater (Double) is the middle ground: a more compact sofa footprint than the King, but still a wider sleeping surface — a good fit for couples or a well-used spare room.

The 3-Seater (King) is the pick for a main living room and for anyone who hosts overnight guests regularly. It seats the most people and gives the largest sleeping surface. If guest-hosting is the main job you're buying for, browse Koala's sofa beds for overnight guests.

The Companion: Koala Sofa Bed Ottoman

The Koala Sofa Bed itself doesn't have built-in storage, which is where the matching Koala Sofa Bed Ottoman earns its place. It's a genuinely useful multi-tasker:

• Hidden storage under the lid swallows spare bedding, blankets and clutter.

• A flippable top turns it into a stable side table (keep anything on top under 5 kg).

• Removable, washable covers in the same exclusive Koala fabrics, so it matches the sofa.

• Tool-free assembly and an FSC®-certified timber frame, like the sofa bed.

It's an add-on rather than part of the sofa bed (RRP £320), so you can buy the full setup or just the sofa on its own. As with the sofa bed, check the site for live pricing, since sale offers change through the year.

What to Look for in a Folding Sofa Bed

A folding sofa bed converts between a sofa and a sleeping surface, typically using one of three mechanisms: pull-out, flip-style, or slide-out. The mechanism matters more than almost anything else you'll compare.

Mechanism type

Pull-out designs extend outward on a fold-out metal frame with a separate mattress. They're the most common type and the source of the "metal bar across the lower back" problem found on most older models. Flip-style mechanisms like Koala's FlipBed™ rotate the seat cushion flat in a single motion instead — faster to deploy, with no crossbar in the sleep surface.

Sleep surface quality

Not all sofa bed sleep surfaces are equal. A full-depth foam mattress like the Koala's Kloudcell™ layer delivers close-to-mattress comfort, where a thin fold-out pad won't. If a guest is sleeping on it more than a few nights a year, this is the spec that matters most.

Covers and cleaning

Removable covers are a practical necessity. On the Koala Sofa Bed, the sleep surface unzips for a cold machine wash, while the outer covers come off for spot-cleaning or a gentle hand wash — always follow the care label. Water-resistant fabrics (all finishes except Sandstone and Coastal Moss) make everyday spills far less stressful.

Measure two numbers, not one

Always check both the sofa width when closed (how much wall space it needs) and the depth when open (how much floor space it needs in front of the sofa). The 3-Seater Koala opens to 222.5 cm deep — that clearance in front of the sofa, not the wall width, is usually your room's real constraint.

Storage

If your room doubles as a guest room, storage for spare bedding is genuinely useful. The Koala Sofa Bed doesn't have built-in storage, but the matching Ottoman adds a hidden compartment and doubles as a side table.

Final Verdict

The best folding sofa bed for most people is the Koala Sofa Bed [4th Gen]. Fast single-motion deployment, a full Kloudcell™ mattress and water-resistant removable covers, available in three sizes to fit almost any room. Add the Ottoman if you need somewhere to hide the spare duvet.

Ready to stop apologising to your guests?

Browse the full Koala sofa bed range — every model arrives flat-packed, ships free across most of the UK, and comes with a 120-day free trial. If it's not the best sleep your sofa's ever given, Koala will come and collect it at no cost.

Frequently Asked Questions

What is the best folding sofa bed for everyday use?

The Koala Sofa Bed [4th Gen] is our top pick for everyday use. Its FlipBed™ mechanism deploys in seconds, and the full-size Kloudcell™ mattress delivers genuine mattress-grade comfort rather than the thin padding found on most pull-outs. Deep, supportive seats mean it works as your daily sofa too.

What is the best folding sofa bed for small spaces?

The Koala Sofa Bed in the 1.5-Seater (Single) size is the most compact option, from £1,250 RRP (often less during sales — check the site for live prices). It shares the same FlipBed™ mechanism as the larger sizes and sleeps one comfortably — ideal for a studio flat, home office or box room. Measure your available floor depth before buying, not just your wall space, as the sofa needs clearance in front to open out.

Is a king sofa bed actually king-sized?

The Koala Sofa Bed's 3-Seater (King) opens to a 155 cm × 209 cm mattress in bed mode — a genuine king-scale sleeping surface, wider and longer than a standard UK double. Always check the "total depth when open" spec too (222.5 cm on this model), as that tells you the floor space the bed actually needs.

How long should a quality sofa bed last?

A well-built sofa bed used as an occasional guest bed should last many years with proper care. For nightly use, foam comfort layers will naturally soften over time, similar to a standalone mattress. Sagging innerspring pull-out mechanisms and covers that can't be cleaned are what shorten lifespan fastest. The Koala Sofa Bed comes with a 5-year warranty and removable, cleanable covers.

Are pull-out sofa beds comfortable?

Older pull-outs earn their bad reputation — the central metal support bar on most designs sits directly under the lower back. Flip-style designs sidestep the issue entirely by eliminating the crossbar. The Koala Sofa Bed uses FlipBed™ — a single-motion flip with no bar and a full Kloudcell™ foam sleep surface.

Do I need to buy the Ottoman with the sofa bed?

No — the Ottoman is a separate add-on (RRP £320; check the site for current pricing). Buy it alongside the sofa bed for hidden storage and a flip-top side table, or just get the sofa bed on its own.