TheraPur ActiGel Polar 1000 Single Mattress
The TheraPur ActiGel Polar 1000 Mattress combines a knitted ActiCool cover with cooling ActiGel foam over pocket springs, which means a cooling surface and a medium feel underneath.
- Cooling cover & airflow foam
- Medium feel suits most sleepers
- Fully hypoallergenic finish
£499
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TheraPur ActiGel Polar 1000 Mattress
More available sizes
Mattress details
Mattress
TheraPur ActiGel Polar 1000 Mattress
Size
Firmness
Medium
Construction
Foam
Gel
Pocket Spring
Depth (cm)
22
Layers
4
Layer Details
ActiCool knitted cover
A knitted ActiCool cover that is described as instantly cooling, so the surface feels cooler to the touch when you get into bed.
ActiGel foam
A cooling ActiGel foam layer, listed by a retailer as 6cm, that is designed to optimise airflow. That means less heat building up under you as you sleep.
I-Fibre and Platinum 3D
Breathable layers of recyclable I-Fibre and Platinum 3D polyester. They add cushioning while letting air move through the mattress.
Pocket springs
Pocket springs, listed by the brand at 1,000, form the supportive core. TheraPur doesn't publish a spring size.
Layer details from dreams.co.uk product page, November 2026.
Key benefits
- Room left for everything else: A 90cm width leaves floor space for a wardrobe, a desk and a clear path to the door in a small bedroom, so the bed doesn't take over the room.
- Cooler nights for younger sleepers: The ActiCool cover and ActiGel foam are designed to let heat escape, which helps if your child kicks the duvet off on warm nights.
- Kind to sensitive noses: A hypoallergenic finish and antibacterial fillings mean fewer allergen worries in a child's room or a guest bed that sits unused for weeks.
- Medium feel for whoever visits: The medium rating suits most back and side sleepers, so a guest bed in a UK single should feel reasonable to most visitors.
- Fits under a sloping ceiling: In a loft conversion, a 3ft x 6ft 3in mattress can tuck in along the low side of the room, leaving the full-height floor free for standing and dressing.
This size suits you if...
You're buying for a child or teenager who sleeps alone and tends to overheat, or you're kitting out a spare room or study where the bed has to share space with a desk. It also suits a single adult in a compact bedroom who wants a medium feel without giving up floor space.
Consider another size if...
You regularly share the bed, or you're an adult who sprawls and finds 90cm cramped. We'd recommend the UK double instead, which gives 67.5cm each for two sharing; allow at least 2.6m x 2.8m.
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FAQ's
Will the TheraPur ActiGel Polar 1000 UK single fit a bunk bed or mid sleeper?
The mattress is 22cm deep, and raised frames usually set a maximum mattress depth so the guard rail stays high enough above the sleeping surface. Check the frame maker's guidance before you order. If their limit is below 22cm, a deeper mattress could leave the top rail too low for a child.
How much room do I need for a UK single ActiGel Polar 1000?
We suggest at least 2.1m x 2.8m of floor space for a UK single. That leaves enough space to get in and out comfortably and to open a wardrobe or desk drawer alongside the bed, which matters most in a box room or a child's bedroom.
Is a UK single TheraPur ActiGel Polar 1000 big enough for an adult?
For one adult of average build, a 90 x 190cm mattress is the standard one-person size. If you're tall, the UK king is 10cm longer. If you mainly want more width to stretch out, the UK double is 45cm wider at the same length.
What size duvet and sheets fit the TheraPur ActiGel Polar 1000 single?
Standard single fitted sheets work, and a single duvet measures 135 x 200cm. Single bedding is the easiest size to find in shops, which is handy if you're buying for a growing child or keeping spare sets for a guest room.
Should I buy the ActiGel Polar 1000 in a single or a double for a teenager?
A UK single keeps more floor space free for a desk and storage, and needs at least 2.1m x 2.8m. The UK double is 45cm wider, which gives a fast-growing teenager more room, but we suggest at least 2.6m x 2.8m for it.