TheraPur ActiGel Alaska 6000 Combination Single Mattress
The TheraPur ActiGel Alaska 6000 Combination Mattress pairs a graphite-infused ActiCool+ cover with a 6cm layer of zoned ActiGel foam, which means a medium-soft feel that manages heat and supports where you need it.
- Graphite cover keeps you cooler
- Zoned foam support where needed
- Medium-soft feel for side sleepers
£1,519
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TheraPur ActiGel Alaska 6000 Combination Mattress
More available sizes
Mattress details
Mattress
TheraPur ActiGel Alaska 6000 Combination Mattress
Size
Firmness
Medium Soft
Construction
Foam
Gel
Depth (cm)
Layers
2
Layer Details
ActiCool+ cover
A graphite-infused cover at the very top of the mattress, designed for heat control and moisture wicking. It's the first thing you lie on, so it helps you stay cooler. The cover is also free from chemicals.
ActiGel zoned foam layer
A 6cm layer of zoned ActiGel foam, TheraPur's deepest, which supports the areas of your body that work hardest. TheraPur says ActiGel transfers heat faster than standard memory foam, so it should feel less warm too.
Layer details from dreams.co.uk product page, November 2026.
Key benefits
- Leaves room for everything else: At 90cm wide, the UK single leaves space beside the bed for a desk, wardrobe or toy storage in a small child's bedroom.
- Two beds in one room: Siblings sharing, or a guest room set up with two beds, can usually fit a pair of UK singles and still keep a walkway between them.
- Cooler for one warm sleeper: The graphite-infused ActiCool+ cover is designed to draw heat and moisture away, which means a teenager who runs hot should feel a little less clammy.
- Softer give for lighter bodies: A medium soft rating suits children and lighter adults who sleep on their side, because the 6cm zoned foam layer lets shoulders and hips settle slightly.
- Fits the bedding you already own: Standard single sheets fit, and a single duvet at 135 x 200cm covers the UK single comfortably.
This size suits you if...
You sleep alone, or you're buying for a child or teenager, and the room also has to hold a desk, storage or a second bed. It also suits you if you're furnishing a spare room that doubles as a study, or a loft conversion where only a narrow footprint fits under the slope.
Consider another size if...
You're a broad-shouldered adult who sprawls, or you'd like the occasional extra person in the bed. We'd recommend the UK small double instead, which is 30cm wider; allow at least 2.4m x 2.8m.
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FAQ's
Will the TheraPur ActiGel Alaska 6000 UK single fit a bunk or cabin bed?
At 90 x 190cm, the UK single matches the standard size most bunk, cabin and mid-sleeper frames are built for. TheraPur doesn't publish a depth for this mattress, though, and raised frames usually set a maximum depth for the safety rail. Check the frame maker's guidance, and ask the retailer for a depth before you order.
How much room do I need for a UK single mattress?
We suggest at least 2.1m x 2.8m of floor space for a UK single. That leaves enough clearance to walk around the bed, open a wardrobe and make the bed, which matters in a box room or a child's bedroom shared with a desk.
Is the UK single TheraPur Alaska 6000 long enough for a tall teenager?
The UK single is 190cm long, the same length as the UK small double and UK double. Only the UK king and UK super king are longer, and the UK single is 10cm shorter than both. A teenager who already brushes the footboard may need a longer size, which also means a much wider bed.
UK single or UK small double for one adult?
The UK single is 30cm narrower than the UK small double but the same length. If your room is tight or the bed is mainly for guests, the UK single keeps floor space free. If you sleep in it every night and like to spread out, the UK small double needs at least 2.4m x 2.8m.
What size duvet fits a UK single mattress?
A single duvet, 135 x 200cm, fits a UK single, along with standard single fitted sheets. Single bedding is the most widely stocked of any size, so replacing sheets for a child's bed or keeping a spare set for a guest room is straightforward.