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.
- More room each: At 75cm per sleeper, you each gain 7.5cm over the UK double, which means fewer nudged elbows and less time perched near the edge.
- Length for taller sleepers: The 200cm length is 10cm longer than a UK double, so a partner over six foot can stretch out without their feet finding the end of the mattress.
- A little more distance from a restless partner: Open coils pass motion across the surface, so the extra width of the UK king puts slightly more space between you and someone who turns often.
- Fits most master bedrooms: We suggest at least 2.7m x 2.9m for a UK king, a lighter demand on your floor space than the 3m x 2.9m we'd allow for the UK super king.
- Even support across the full width: The steel coils are joined in a lattice, which means the whole 150cm surface works together to hold you both level rather than each side behaving separately.
This size suits you if...
You share with a partner and have outgrown a UK double, one of you is tall enough to feel the end of a 190cm bed, and you both prefer a firm, supportive surface to a soft sink-in feel.
Consider another size if...
You wake easily when your partner moves, because the connected coils pass motion across the bed. We'd recommend the UK super king instead, which gives 90cm each and needs at least 3m x 2.9m.
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Is the Spring King Memory Ortho UK king big enough for two people?
For most couples, yes. The UK king gives you 75cm each, which is 7.5cm more each than the UK double. If one of you sprawls, or a dog regularly joins you, the UK super king gives 90cm each, although it needs more floor space.
Will I feel my partner move on the Spring King Memory Ortho in a UK king?
Probably, to some degree. Open coils are linked together, so movement travels further than it does with pocket springs. The UK king's extra width helps a little. If one of you gets up hours before the other and the light sleeper already wakes on a UK double, the UK super king adds more distance.
Is the Spring King Memory Ortho UK king long enough for a tall person?
At 200cm, or 6ft 6in, the UK king is 10cm longer than the UK double, the UK small double and the UK single. That extra length is often the real reason couples with a partner over six foot move up. The UK super king is the same length, so going bigger adds width only.
Should I get the Spring King Memory Ortho in a UK king or UK super king?
Choose the UK king if your room is around our suggested minimum of 2.7m x 2.9m, with 3.2m x 3.2m being comfortable. The UK super king gives 15cm more each but needs at least 3m x 2.9m. In a new build master bedroom with fitted wardrobes, the UK king usually leaves more space to walk around.
Is the Spring King Memory Ortho UK king comfortable during pregnancy?
The UK king gives you 75cm each, which leaves some room for a pregnancy pillow, although pillows use up that space quickly. This mattress is rated firm, and some people prefer that when shifting position is harder. Lightweight side sleepers may find it a little unyielding at the hip, so a topper could help.