TheraPur ActiGel Arctic 3000 Combination Mattress

Assessed from Therapur's published specification for this mattress, captured November 2026, and from regular price comparison across our UK retail partners.

The firm feel suits sleepers who like a flat, supportive surface, such as back sleepers. The graphite-infused cover is there to keep the surface cooler, which helps if you tend to wake up warm. Zoned ActiGel foam has pressure-relieving zones, so firm support doesn't have to mean pressure building up at your shoulders and hips. The pocket and micro springs absorb motion, so you should notice less disturbance from a partner. It's a good match if firmness is your priority, although Therapur doesn't publish a depth or layer order.

Back sleepers
The firm feel gives a flat, supportive surface, which suits anyone who sleeps on their back and likes to stay level on top of the mattress.

Warm sleepers
A graphite-infused ActiCool+ cover is designed to keep the surface cooler, which means less chance of waking up too warm during the night.

Couples
Pocket springs and micro springs absorb motion, so you should notice less disturbance when your partner moves, and the range runs up to a UK super king.

Heavier sleepers
Firm support combined with zoned ActiGel foam and pocket springs should hold you up well, while the pressure-relieving zones ease the load at shoulders and hips.

If you prefer sleeping on a soft or medium mattress, this might not be the best choice. It's rated firm, so side sleepers who like to sink in, and lighter sleepers who need more give, may find it unyielding. Therapur also doesn't publish a depth for it, so check it will suit your bed frame.

How firm is the TheraPur ActiGel Arctic 3000?

It's rated firm. That suits sleepers who want a flat, supportive surface, such as back sleepers, although side sleepers who prefer a softer, sink-in feel may find it too firm.

What sizes does the TheraPur ActiGel Arctic 3000 come in?

It comes in a UK single, UK small double, UK double, UK king and UK super king. There is also an EU small single for narrower or non-standard bed frames.

How deep is the TheraPur ActiGel Arctic 3000?

Therapur doesn't publish a depth for this mattress. If you're fitting it to a bed frame or using deep fitted sheets, check the depth with the retailer before you buy.

Is the TheraPur ActiGel Arctic 3000 good for hot sleepers?

It has a graphite-infused ActiCool+ cover designed to keep the surface cooler, so it's a sensible choice if you sleep warm. How cool it feels will still vary from person to person.

Does the TheraPur ActiGel Arctic 3000 come with a trial?

Dreams offers a 100-night trial on it. That's the retailer's own offer rather than Therapur's, so check the terms with Dreams before you order.