Tuft & Springs Affinity Ortho 1500 Gel Hybrid Super King Mattress
The Tuft & Springs Affinity Ortho 1500 Gel Hybrid pairs 1500 pocket springs with a layer of cooling gel memory foam, which means you get the contouring feel of foam without as much of the heat it can trap.
- Cool-touch foam for warm sleepers
- Minimises partner disturbance
- Medium-firm for back & front sleepers
£899
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Tuft & Springs Affinity Ortho 1500 Gel Hybrid Mattress
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Mattress details
Mattress
Tuft & Springs Affinity Ortho 1500 Gel Hybrid Mattress
Size
Firmness
Medium Firm
Construction
Foam
Pocket Spring
Hybrid
Memory Foam
Gel
Depth (cm)
29
Layers
3
Layer Details
Knitted Cover
A soft knitted cover that's breathable, which means heat can escape rather than build up around you. It helps keep your temperature even through the night.
Cooling Gel Fusion™ Memory Foam
Gel memory foam that feels cool to the touch and gently contours to your body. You get pressure relief at the shoulders and hips without the warmth traditional memory foam is known for.
1500 Pocket Springs
Each of the 1500 springs sits in its own fabric pocket and works independently of its neighbours. That means support adjusts to your shape and movement transfers less across the mattress.
Layer details from mattressnextday.co.uk product page, September 2026.
Key benefits
- Distance from a restless partner: You each get 90cm, and the 1500 pocket springs move independently, which means a partner's turning is less likely to reach your side.
- Space when the family joins you: A child or a large dog can take the middle of the bed without pushing either adult right to the edge.
- Wider than a UK king, same length: The UK super king matches the UK king for length but is 30cm wider, which gives each of you 15cm more.
- Helps with a warmer, busier bed: More bodies mean more heat, and the cool-to-the-touch gel memory foam under a breathable knitted cover helps that warmth escape rather than build up.
- Worth measuring before you order: At 180cm wide, check your door swing and any tight landing turns, then confirm the room clears our suggested 3m x 2.9m.
This size suits you if...
You share with a partner whose tossing and turning wakes you, or children and pets regularly end up in the bed with you, and your bedroom comfortably clears our suggested minimum of 3m x 2.9m.
Consider another size if...
Your room falls short of 3m x 2.9m, or a narrow landing makes a 180cm wide mattress impractical. We'd recommend the UK king instead, which needs at least 2.7m x 2.9m.
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FAQ's
Is the Affinity Ortho 1500 UK super king big enough for two adults and a child?
For occasional visits, yes. The UK super king gives two adults 90cm each, so a small child can sleep between you without either of you ending up on the edge. The medium firm feel also means a lighter child won't sink into a dip in the middle.
How much extra space does the UK super king give over the UK king?
The UK super king is 30cm wider than the UK king, and the two sizes are the same length, 200cm. Shared between two people, that works out as 15cm more each. The UK king needs a smaller room, and we suggest at least 2.7m x 2.9m for it rather than 3m x 2.9m.
Will a restless partner still disturb me on the Affinity Ortho 1500 super king?
Much less than on a narrower size. You have 90cm each, and each of the 1500 springs sits in its own pocket and moves on its own, which limits how far movement travels. Very heavy tossing may still be felt slightly, but the width of the UK super king gives you real distance.
Should I choose the UK super king or the UK double of the Affinity Ortho 1500?
If two of you share every night, the UK super king is 45cm wider and 10cm longer than the UK double, giving you 22.5cm more each. The UK double suits smaller rooms, and we suggest at least 2.6m x 2.8m for it, against 3m x 2.9m for the UK super king.
Is the Affinity Ortho 1500 super king a good choice if my dog sleeps on the bed?
For a large dog that joins you most nights, the UK super king makes sense, because 180cm of width leaves room for the dog without cutting into your 90cm each. The medium firm surface stays fairly level under a dog's weight, although Tuft & Springs doesn't publish guidance on pets.