Rest Assured Harris Ortho Pocket 1400 Mattress
The Rest Assured Harris Ortho Pocket 1400 Mattress combines pocket springs with wool, cotton, cashmere and silk fillings, which means you get firm, supportive sleep with a natural, breathable feel.
- Firm support for back sleepers
- Natural wool & cotton fillings
- Wire edge border keeps its shape
£818.99
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The Rest Assured Harris Ortho Pocket 1400 is a firm pocket spring mattress, 27cm deep, with natural fillings including British wool, cotton, cashmere and silk under a Belgian damask cover. It suits sleepers who want a firm, supportive surface, especially on their back. It comes in a UK single, UK small double, UK double, UK king and UK super king. Archers Sleepcentre offers a 60-night comfort guarantee, and Rest Assured gives a 5-year guarantee against manufacturing faults.
Mattress specifications
Firmness
Firm
Type
Pocket Spring
Depth (cm)
27
Number of Layers
Trial Period (nights)
Warranty (years)
Price Range
£818 to £1,399
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Certifications
Assessed from the specification published by archerssleepcentre.co.uk, captured October 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
The firm feel makes this a sensible pick if you want a flat, supportive surface rather than a sink-in one. The pocket springs sit in cloth sleeves, and a wire edge border helps the sides keep their shape. Natural fillings of wool, cotton, cashmere and silk add a traditional, breathable comfort layer, and the Belgian damask cover has a quilted finish. It's single sided, with turning handles on the border, so you rotate it head to toe rather than flip it. Suits most back sleepers, although lighter side sleepers may find it a little unyielding.
Key features & layer details
We’re still collecting information on this mattress. Unfortunately, we don’t have its key features yet.
Best suited for?
Back sleepers
The firm feel gives a flat, supportive surface rather than a sink-in one, which suits anyone who sleeps mostly on their back.
Warm sleepers
Natural fillings of wool, cotton, cashmere and silk add a breathable comfort layer, which helps if you tend to feel the heat at night.
Couples
Pocket springs sit in cloth sleeves, and a wire edge border helps the sides keep their shape, so the whole surface stays supportive.
Heavier sleepers
A firm rating and 27cm depth with pocket springs give a flat, supportive feel that suits people wanting a surface that resists sinking.
If you prefer sleeping on a soft or medium mattress, this might not be the best choice. It's rated firm, so lighter side sleepers who want a surface that gives around the shoulders and hips may find it too unforgiving. It can't be flipped either, so rotating head to toe is your only option. Rest Assured doesn't publish a spring count.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Rest Assured Harris Ortho Pocket 1400 Mattress
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FAQ's
How firm is the Rest Assured Harris Ortho Pocket 1400?
Rest Assured rates it firm. That suits back sleepers and anyone who wants a flat, supportive surface, although lighter side sleepers may find it too unyielding around the shoulders and hips.
What sizes does the Rest Assured Harris Ortho Pocket 1400 come in?
It comes in a UK single, UK small double, UK double, UK king and UK super king. Rest Assured doesn't list a UK small single, so check your bed frame before ordering.
How deep is the Rest Assured Harris Ortho Pocket 1400?
It's 27cm deep. That's a fairly standard height, but check it against your bed frame and any mattress topper or protector you plan to add.
What is the Rest Assured Harris Ortho Pocket 1400 made of?
It has pocket springs in cloth sleeves, British wool fillings and natural fibres including cotton, cashmere and silk. A Belgian damask cover and a rod-edge metal perimeter frame complete the build.
Does the Rest Assured Harris Ortho Pocket 1400 come with a trial or guarantee?
Archers Sleepcentre offers a 60-night comfort guarantee, and you need to buy a Purecare protector with the mattress to qualify. Rest Assured gives a 5-year guarantee against manufacturing faults.
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