Coolflex Essentials Pocket Memory Hybrid Mattress
Mattress
Coolflex Essentials Pocket Memory Hybrid Mattress
Size
Firmness
Construction
Depth (cm)
24
Layers
2
Layer Details
- Memory Foam. A 2cm layer of memory foam sits on top, moulding to your body for orthopaedic support and comfort. In practice, this means less pressure on your hips and shoulders as you settle in.
- Pocket Springs. Beneath the foam are 800 individual pocket springs, each hand-sewn into its own fabric pocket. They work independently, so the mattress responds to your shape rather than moving as one unit.
Layer details from mattressnextday.co.uk product page, September 2026.
- A shared size that fits the room: At 135 x 190cm, the UK double leaves space for wardrobes and drawers in most UK bedrooms, where a UK king would start to crowd things.
- 67.5cm each for two sharing: Two people sharing get 67.5cm each, and the 800 pocket springs respond to each sleeper separately, so one person turning disturbs the other less.
- Room for bedside tables both sides: In an average sized room, a UK double usually still allows a bedside table on each side, which a wider mattress often rules out.
- Easy, affordable bedding: Double fitted sheets and 200 x 200cm duvets are sold everywhere at every price, and the 24cm depth works with standard fitted sheets.
- A budget-friendly way to share: This mattress sits at the affordable end of hybrids, and the UK double keeps that saving intact if you're furnishing a whole home at once.
This size suits you if...
You share the bed every night and your room is a typical UK size, or you sleep alone and want space to spread out, perhaps with a dog or cat claiming a corner. It also suits a guest room that hosts visiting couples, where a medium feel is a safe bet for sleepers you can't predict.
Consider another size if...
You and your partner both like space and your room measures at least 2.7m x 2.9m. In that case we'd recommend the UK king instead: it's 15cm wider and 10cm longer, a real difference across a night's sleep.
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Is the Coolflex Essentials double big enough for a couple?
For most couples, yes. The UK double gives 67.5cm each for two people sharing, and the 800 pocket springs move independently, so you feel less of your partner's movement. Heavier couples, or anyone who sprawls, may find the UK king more comfortable, but as a shared size in a typical room the UK double works well.
What room size do I need for the Coolflex Essentials in a UK double?
We suggest allowing at least 2.6m x 2.8m, with around 3m x 3m being the comfortable norm. That leaves enough clearance to walk round the bed and open drawers, and in most rooms you'll still fit bedside tables on both sides. Measure with your other furniture in mind, particularly wardrobe doors.
Should I get the Coolflex Essentials in a double or a king?
It comes down to your room. The UK double is 15cm narrower and 10cm shorter than the UK king, so it fits where a king would dominate. If you have at least 2.7m x 2.9m and you both value space, size up. If not, the UK double is the sensible choice, and the cheaper one.
Will a double mattress get up a narrow staircase?
Usually, yes. At 135cm wide, a UK double is manageable on most staircases, though the pocket spring core means it can't be folded like an all-foam mattress. If you live in an older terrace with a turning stair or a tight new build landing, measure the awkward point before ordering, and check the retailer's delivery guidance.
Is the Coolflex Essentials double a good guest room mattress?
It's a strong candidate. The UK double comfortably sleeps visiting couples, the medium feel suits a wide range of sleepers you can't choose for, and the modest price makes sense for a bed used a few weeks a year. Compare the retailers listed on this page; the prices shown are updated as retailers change them.