Spring King Memory Ortho Mattress
Mattress
Spring King Memory Ortho Mattress
Size
Firmness
Construction
Depth (cm)
26
Layers
3
Layer Details
- Cover. A soft knitted cover that is breathable, which means heat can escape rather than build up under you. It helps keep you at a more even temperature through the night.
- Memory Foam. This layer moulds to your body, which means pressure points such as hips and shoulders get some relief while you still feel supported. It is where the orthopaedic comfort of the mattress comes from.
- Open Coil Springs. Interlaced coils of high-tensile steel joined together in a lattice. Because the coils are connected, the surface responds as one unit, giving broad, even body support with a traditionally firm feel.
Layer details from mattressnextday.co.uk product page, September 2026.
- Room to move apart: You get 90cm each for two sharing, which means 15cm more each than the UK king and a real buffer from a partner who turns all night.
- Space when the household joins in: It is 30cm wider than the UK king at the same length, so a child arriving at 3am or a large dog doesn't push anyone to the edge.
- Firm from edge to edge: The high-tensile coils are linked in a lattice, so the full 180cm width responds as one firm surface rather than feeling like two separate halves.
- In proportion in a large room: In a period bedroom or a generous master, a 6ft x 6ft 6in bed looks right against the wall where a UK king can look a little lost.
- Breathable cover for a busier bed: The knitted cover lets heat escape, which helps when two adults, and sometimes a child or pet, are warming one wide mattress.
This size suits you if...
Your partner's restlessness regularly wakes you, children or a large dog often 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 our suggested 3m x 2.9m, or you mostly sleep alone. We'd recommend the UK king instead, which needs at least 2.7m x 2.9m.
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Is the Spring King Memory Ortho super king big enough for two adults and a child?
For occasional night visits, yes. Two sharing get 90cm each, and a small child tucked between you takes some of that, so expect a little less room rather than a squeeze. The firm surface means a child won't roll into a dip in the middle. Sharing as three every night is tighter, so think about your usual routine before deciding.
Will I feel my partner move on the Spring King Memory Ortho in a UK super king?
Probably a little. The open coil springs are joined together, so movement travels further than it would on pocket springs. The UK super king gives you 90cm each, 15cm more each than the UK king, and that extra distance reduces how much you notice. If your partner is very restless, the width is the most useful thing the UK super king offers.
Spring King Memory Ortho UK king or UK super king: which should I buy?
The UK super king is 30cm wider than the UK king and the same length. Choose the UK super king if your room allows at least 3m x 2.9m and you want space for a restless partner, children or pets. If your room is tighter, the UK king needs at least 2.7m x 2.9m and still gives 75cm each for two sharing.
Where should a super king go in a loft conversion bedroom?
Put the head end against the tallest wall so you can sit up without meeting the ceiling, and run the slope along one side if you can. At 6ft x 6ft 6in, a UK super king rarely has more than one workable position, so measure the full-height floor area rather than the room's total footprint.
Is the Spring King Memory Ortho super king good for sharing with a large dog?
It gives you the most room this mattress offers: 30cm wider than the UK king at the same 200cm length. A big dog stretched across one side or the foot leaves two people far more space than a smaller size would. The knitted cover is soft, so a washable mattress protector is sensible once paws are involved.