Spring King Pocket Memory Ortho 1500 King Size Mattress
The Spring King Pocket Memory Ortho 1500 is a firm hybrid mattress that pairs individually pocketed springs with a layer of memory foam, which means you get solid support underneath with a little cushioning where your body meets the mattress.
- Firm without feeling harsh
- Minimises partner disturbance
- Breathable cover for even temperature
£369
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Spring King Pocket Memory Ortho 1500 Mattress
More available sizes
Mattress details
Mattress
Spring King Pocket Memory Ortho 1500 Mattress
Size
Firmness
Firm
Construction
Foam
Pocket Spring
Hybrid
Memory Foam
Depth (cm)
24
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 you at an even temperature through the night.
Memory Foam
This layer adds a soft, cushioning feel, gently moulding to your shape as you settle in. It takes the edge off the firm support underneath.
Pocket Springs
Individually pocketed springs move independently from one another, so the mattress responds to your body's movements more effectively. In practice, that means support where you need it and less disturbance from a restless partner.
Layer details from mattressnextday.co.uk product page, September 2026.
Key benefits
- More room for each of you: You get 75cm each for two sharing, which is 7.5cm more per person than the UK double, enough to stop elbows meeting in the night.
- Length for taller sleepers: At 200cm long, the UK king is 10cm longer than the UK double, so a partner over six foot is less likely to have feet hanging off the end.
- Calmer nights on different schedules: Independently pocketed springs, combined with the extra width, mean an early riser climbing out is less likely to wake the partner still asleep.
- Firm support across a wider surface: The firm pocket spring base, softened slightly by memory foam, suits back and front sleepers who want steady support without a hard, board-like finish.
- Room for pillows and position changes: During pregnancy or recovery, the UK king leaves space for supporting pillows and shifting around without pushing your partner towards the edge.
This size suits you if...
You share the bed every night and the UK double has started to feel tight, or one of you is over six foot and needs the extra 10cm of length, or you both sleep on your back or front and want a firm surface with more personal space.
Consider another size if...
Your bedroom is smaller than our suggested 2.7m x 2.9m. The UK double would suit you better, and we suggest at least 2.6m x 2.8m for it.
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FAQ's
Is a UK king Spring King Pocket Memory Ortho 1500 big enough for two adults and a dog?
It gives 75cm each for two people sharing, which is comfortable for two adults alone. If a dog joins you most nights and tends to spread out, that space shrinks quickly. The UK super king gives 90cm each, so it is the better choice if the dog is part of the routine.
Will a UK king Spring King Pocket Memory Ortho 1500 fit in a new build master bedroom?
We suggest allowing at least 2.7m x 2.9m, with 3.2m x 3.2m comfortable. New build master bedrooms often feel smaller once fitted wardrobes and bedside tables go in, so measure the floor space you will have left, not the room's advertised dimensions.
Is the UK king long enough for someone over 6ft on this mattress?
The UK king measures 200cm, or 6ft 6in, which is 10cm longer than the UK double, the UK small double and the UK single. For a partner over six foot, that extra length is often the main reason to upgrade. The UK super king is the same length, so sizing up adds width only.
Should couples choose the UK king or UK super king in the Spring King Ortho 1500?
The UK king gives 75cm each and suits most couples who have outgrown a UK double. The UK super king gives 90cm each, 15cm more per person, and needs at least 3m x 2.9m. If partner disturbance is your main worry and the room allows it, the UK super king adds the extra buffer.
Is the UK king Spring King Pocket Memory Ortho 1500 good for getting in and out after surgery?
The extra width means you can sit on the edge and swing your legs round without disturbing a partner, and the firm feel gives a steady surface to push up from. Check the height of your bed frame too, since the mattress is only part of how easy getting in and out will be.