Spring King Memory Ortho Mattress

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

This mattress makes sense if you want firm, orthopaedic-style support on a modest budget. The open coil springs are made from high-tensile steel joined in a lattice, which means the whole surface works together to hold your body level, while the memory foam layer above moulds to your shape and eases pressure points at the hips and shoulders. The knitted cover is breathable, so it should help keep your temperature steadier through the night, a sensible touch given memory foam's reputation for warmth. Free next day delivery is a genuine plus if your old mattress has already given up. The 1-year guarantee is short, but at an affordable starting price the value case still holds.

Back sleepers
The firm feel and connected open coil springs hold the body level, which gives back sleepers the supportive, orthopaedic surface they tend to want.

Budget buyers
Described as one of the more affordable ways to get memory foam over springs, it gives you a combination build without a high outlay.

Warm sleepers
The breathable knitted cover lets heat escape rather than build up, which helps offset memory foam's reputation for sleeping warm.

Guest rooms
With five UK sizes from Single to Super King and a firm, supportive feel, it suits a spare room where different visitors may stay.

Front sleepers
A firm, supportive surface from the lattice of high-tensile steel coils keeps the body from sinking in too deeply, which suits those who sleep face down.

This is a firm mattress, so lightweight side sleepers may find it a little too unyielding at the shoulder and hip. Open coil springs also move as one connected unit, which means couples may notice more motion transfer than with pocket springs. And if you prefer a deep, cradling sink-in feel, look elsewhere.

Is the Spring King Memory Ortho mattress firm or soft?

It is rated firm. The open coil springs give solid, even support across the whole surface, while the memory foam layer softens the feel slightly at pressure points. It suits people who like a supportive orthopaedic feel, although lightweight side sleepers may find it a little too firm.

How deep is the Spring King Memory Ortho mattress?

It is 26cm deep, made up of open coil springs, a layer of memory foam and a breathable knitted cover. Standard UK fitted sheets should fit without difficulty.

What sizes does the Spring King Memory Ortho come in?

Five UK sizes: Single, Small Double, Double, King and Super King.

Does the Spring King Memory Ortho mattress come with a guarantee?

Yes, it comes with a 1-year guarantee. That is shorter than many brands offer, so it is a fair point to weigh against the low price. Free next day delivery is included.

Does the Spring King Memory Ortho sleep hot?

Memory foam can hold warmth, but this mattress uses a breathable knitted cover designed to keep you at a more even temperature through the night. If you are an especially hot sleeper, a mattress with less foam may still suit you better.