Kaymed Smart Latex 3500 Box Top Mattress
Mattress
Kaymed Smart Latex 3500 Box Top Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
40
Layers
4
Layer Details
- Quilted cover. A quilted cover creates a comfortable sleep surface. It's the first thing you'll feel, adding a soft, cushioned finish.
- Box top / Pillow top. An additional comfort layer stitched on top for a more luxurious feel. This softens the initial feel without changing the underlying support.
- Latex. A 75mm layer of latex offers relaxing pressure relief, which means it cradles hips and shoulders while springing back quickly as you move. It's infused with graphite for cooler rest, useful if you tend to overheat.
- Pocket springs. 3500 pocket springs, based on the kingsize, provide adaptive support by responding to each part of your body independently. Foam encapsulated edge support firms up the sides, so you won't feel a roll-off sensation at the edge.
Layer details from mattressonline.co.uk product page, September 2026.
- 90cm each, every night: With 90cm each for two people sharing, a partner who turns constantly becomes far easier to sleep next to.
- Springs that keep movement local: Pocket springs respond to each body independently, which means fidgeting on one side of this wide bed barely registers on the other.
- Usable right to the edge: Foam encapsulated edge support firms up the sides, so the full 180cm width is sleepable, useful when a child or dog claims the middle.
- Cool across a big surface: The 75mm graphite-infused latex layer draws heat away, so two warm bodies sharing one mattress needn't mean a stuffy night.
- A soft landing on a firm base: The box top cushions the surface while the medium firm support underneath keeps both sleepers on top of the mattress rather than sinking towards each other.
This size suits you if...
You share the bed every night and a UK king still feels crowded, your children or pets regularly join you and everyone needs their own patch, or your master bedroom is large enough that a smaller bed would look lost. Allow at least 3m x 2.9m of floor space, ideally more, so the room still works around it.
Consider another size if...
Your bedroom measures under our suggested 3m x 2.9m minimum, or you mostly sleep alone. We'd recommend the UK king instead: it's 30cm narrower, the same length, and we suggest at least 2.7m x 2.9m for it.
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Is a super king Kaymed Smart Latex 3500 good for a restless partner?
It's one of the better setups for it. Distance does most of the work: 90cm each for two people sharing means movement happens further away, and the pocket springs respond to each sleeper independently, so a 3am turn on one side is felt far less on the other. Firm edge support keeps the outer width usable too.
How much bigger is the super king Kaymed Smart Latex 3500 than the king?
The UK super king is 30cm wider than the UK king, and the two sizes are the same length. That extra width is the whole argument for this size: it's what makes room for a wandering child or a large dog without either adult ending up on the edge.
What room size does the super king Kaymed Smart Latex 3500 need?
We suggest at least 3m x 2.9m, and this mattress deserves the space in another way too: at 40cm deep, it's a tall, substantial presence in a room. In a smaller bedroom it can dominate, so measure with wardrobes, door swing and bedside tables in mind before committing.
Does the super king version have 3500 springs?
Kaymed's 3500 spring count is based on the kingsize, and smaller sizes contain fewer. The brand doesn't publish a separate figure for the UK super king, so check with the retailer if the exact count matters to you. In practice the springs are pocketed, so support adapts across the full width either way.
Will the Kaymed Smart Latex 3500 super king fit around the house?
At 180 x 200cm, or 6ft x 6ft 6in, this is the largest size UK retailers stock as standard, and at 40cm deep it's a bulky item to manoeuvre. Measure your stairwell, landing turns and bedroom door before ordering, as a tight Victorian staircase can be the real obstacle rather than the room itself.