Sealy Alston Gel Advantage Pillow Top Super King Mattress
The Sealy Alston Gel Advantage Pillow Top Mattress combines a Geltex breathable comfort layer with a pillow top, which means extra surface cushioning on a medium-rated mattress, with less trapped heat.
- Cushioned pillow top surface
- Breathable gel comfort layer
- Reinforced edges for steadier sides
£875
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Sealy Alston Gel Advantage Pillow Top Mattress
More available sizes
Mattress details
Mattress
Sealy Alston Gel Advantage Pillow Top Mattress
Size
Firmness
Medium
Construction
Foam
Gel
Depth (cm)
29
Layers
Layer Details
Key benefits
- Distance from a fidgety partner: With 90cm each for two people sharing, a partner who turns all night sits far enough away that you're less likely to feel every shift.
- Room when a child climbs in: The UK super king's 6ft width means one small visitor after a bad dream doesn't squeeze either adult onto the border.
- A reinforced border for crowded nights: Sealy builds the Edge Guard border from high-density foam, intended to make the sides feel steadier when someone ends up sleeping near the edge.
- In proportion with a large bedroom: In a period bedroom or a generous master, a 180 x 200cm bed sits comfortably where a UK king can look slightly undersized.
- Extra width, same length as a UK king: The UK super king and the UK king are both 200cm long, so the step up from a UK king adds 30cm of width and nothing else.
This size suits you if...
You share with a partner who tosses and turns, your children or a dog regularly end up in the bed with you, or your bedroom is large enough that a UK king would look a little lost in it.
Consider another size if...
Your bedroom is smaller than our suggested 3m x 2.9m minimum for a UK super king, or your landing turns are tight. We'd recommend the UK king instead; we suggest at least 2.7m x 2.9m for it.
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FAQ's
Will a Sealy Alston Gel Advantage Pillow Top super king fit through my house?
The UK super king measures 180 x 200cm and the mattress is 29cm deep, so measure the bedroom door, the stairwell and the tightest landing turn against those figures before you order. Narrow, turning staircases in older houses are where a bed this size most often gets stuck, so check the route as carefully as the room.
How much more space per person does a super king give than a king?
In the UK super king you each get 90cm, against 75cm each in the UK king, so 15cm more per person. Both sizes are 200cm long, which means every bit of the extra goes into width, where a restless partner or a wandering child makes the most difference.
Is a super king big enough for two adults and a young child?
For the occasional night, usually yes. Two adults get 90cm each, so a small child can settle in the middle without either parent clinging to the edge. If it happens most nights with older children, expect it to feel snug, even with Sealy's reinforced Edge Guard border.
What size bedroom do I need for a super king pillow top mattress?
We suggest at least 3m x 2.9m for a UK super king, with around 3.5m x 3.2m feeling right once you add bedside tables and room to walk round. In a loft conversion, check the bed can go against a full-height wall so neither of you sleeps under the slope.
What bedding fits a Sealy Alston super king?
You'll need UK super king sheets and a 260 x 220cm duvet. The mattress is 29cm deep with a pillow top, so choose deep fitted sheets that tuck well under the edges. Super king bedding is pricier than smaller sizes, so allow for that when you buy a couple of sets.