Relyon Comfort Pure Memory 1400 Pocket Super King Mattress
The Relyon Comfort Pure Memory 1400 Pocket Mattress is a hybrid with a medium to firm feel, pairing a 5cm memory foam layer with 1400 pocket springs in a 30cm deep build.
- Eases pressure at hips & shoulders
- Sprung core lets air circulate
- Suits back & combination sleepers
£939
Get the lowest price we've found
Save with the previous model
Some retailers still sell the earlier version of this mattress for less than the current model's best price.
Relyon Comfort Pure Memory 1400 Pocket Mattress
More available sizes
Last seen for £796 at Mattress Online on 25th June 2026
Mattress details
Mattress
Relyon Comfort Pure Memory 1400 Pocket Mattress
Size
Firmness
Medium Firm
Construction
Foam
Pocket Spring
Hybrid
Memory Foam
Depth (cm)
30
Layers
4
Layer Details
Knitted cover
A soft knitted finish that adds a touch of cosiness, which means the surface feels inviting rather than clinical. Knitted covers are breathable and help air move through the sleep surface.
Memory Foam
A 5cm layer of memory foam that moulds to your shape, which means pressure is lifted from your hips and shoulders as you settle in. Expect a gentle sink-in feel rather than sleeping on top of the mattress.
Soft White Fibres
A dense layer of soft synthetic fillings that adds cosy comfort while reinforcing the medium to firm feel. It also works as an insulator pad, protecting you from feeling the spring unit beneath.
Pocket Springs
A core of 1400 pocket springs, each in its own fabric pocket, adapts to your movement through the night. Because the springs move independently, you and a partner are less likely to disturb each other.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- 90cm of width each: Two people sharing get 90cm each, which means a partner turning over happens far enough away that you may never register it.
- Distance plus independent springs: The 1400 pocket springs move independently, and paired with the extra width of a UK super king, movement on one side rarely travels to the other.
- Room for night-time visitors: If a child pads through at 3am, or the dog treats your bed as its own, this size absorbs an extra body without anyone losing their share.
- Fills a large master properly: In a period property or generous new build master, a UK king can look lost; the 180cm width sits in proportion with the room.
- Familiar bedding footprint: It takes standard super king sheets and a 260 x 220cm duvet, all widely stocked, so dressing the bed is straightforward.
This size suits you if...
You share the bed every night and want the maximum standard width UK retailers stock, your children or a large dog regularly join you before morning, or one of you is a genuinely restless sleeper and the pocket springs alone haven't been enough elsewhere. Your bedroom should comfortably clear the 3m x 2.9m we suggest as a minimum.
Consider another size if...
Your bedroom falls short of the 3m x 2.9m we suggest, or you mostly sleep alone. Relyon doesn't make this mattress in a UK double or UK king, so we'd recommend the UK small double instead, allowing at least 2.4m x 2.8m.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
How big is the Relyon Comfort Pure Memory 1400 in a super king?
The UK super king measures 180 x 200cm, which is 6ft x 6ft 6in. That's 30cm wider than a UK king and the same length, giving two people sharing 90cm each. It's the largest size UK retailers stock as standard, and the biggest this Relyon comes in.
What room size do I need for the Relyon super king?
We suggest a minimum of 3m x 2.9m, and a room closer to 3.5m x 3.2m feels more comfortable, leaving space to walk around the bed and open wardrobe doors. In a loft conversion, check the ceiling slope too, as it can limit which wall takes a 180cm wide bed.
Is the super king Relyon Comfort Pure good for restless partners?
It's one of the better cases for this size. Each of the 1400 pocket springs moves independently, so motion doesn't travel far, and 90cm of width each means most of your partner's fidgeting happens well away from you. Distance does what no comfort layer can.
Is there enough room if children share the bed?
More than any other size of this mattress. With 180cm of width, a child climbing in between you still leaves everyone a workable share, and the medium firm feel keeps the surface stable rather than rolling you all towards the middle. The UK small double would feel crowded very quickly by comparison.
Will a 180cm wide mattress get up my stairs?
Usually, because this mattress can flex around a landing turn, but at 180 x 200cm and 30cm deep it's a two-person job. Measure your stairwell, any tight turns and the bedroom door swing before ordering, and check the delivery terms of the retailers listed on this page.