Mattress Online Premium Gold 2000 Pocket Extra Firm Mattress
Mattress
Mattress Online Premium Gold 2000 Pocket Extra Firm Mattress
Size
Firmness
Extra Firm
Construction
Depth (cm)
29
Layers
3
Layer Details
- Comfort Layer. Soft white synthetic fibres create a cosy feel on the surface. These are lightweight, high-loft materials, which means they should hold their height and shape over time rather than flattening quickly.
- Support System. 2000 extra firm pocket springs contour around your body shape while pushing back against it, which means full body support and spinal alignment rather than a hammock effect. This is where the very firm, sturdy feel comes from.
- Edge Support. A wire rod runs along the perimeter of the pocket springs, giving you a durable edge that doesn't dip or sag. In practice, that means more usable sleep space right to the sides of the bed.
Layer details from mattressonline.co.uk product page, September 2026.
- Spreading room for one: The UK small double is 30cm wider than the UK single, which means a solo sleeper who likes proper pushback can also change position freely.
- Fits compact double bedrooms: At 15cm narrower than the UK double, this size can be the difference between a walkway beside the bed and a squeeze past it.
- Usable width right to the edge: A wire rod runs around the perimeter of the springs, which matters more at 120cm wide because you can sleep close to the side without it dipping.
- Firm support across the full 120cm: The 2000 pocket springs contour and push back across the whole surface, so back and front sleepers get consistent spinal alignment wherever they settle.
- Copes with the occasional shared night: An extra firm build transfers little movement, so a guest couple sharing this width now and then shouldn't disturb each other too much.
This size suits you if...
You sleep alone, prefer a very firm surface, and have outgrown a UK single but can't spare the width a standard double needs. Or you're furnishing a box room, loft conversion or guest bedroom where 120cm is the widest bed that still lets the door clear and leaves floor space. Occasional two-person use, a visiting couple a few nights a year, is fine at this width.
Consider another size if...
You share the bed every night, because 120cm is tight for two adults long term. The UK double gives 67.5cm each for two sharing, and we suggest a room of at least 2.6m x 2.8m for it.
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Is a small double big enough for one adult on an extra firm mattress?
Yes, comfortably. The UK small double is 30cm wider than the UK single, and on an extra firm surface you sleep on top rather than sinking into a dip, so that width stays usable. The wire rod edge also means you can lie near the side without it sagging, which helps at 120cm.
Can a couple share the Premium Gold 2000 in a small double?
For occasional nights, yes. The extra firm springs transfer little movement between sleepers, and the supported edges let each person use the full width. For every night, two adults will find 120cm restrictive; across a full night you'd both notice the lack of turning room. The UK double, giving 67.5cm each, suits nightly sharing better.
What room size do I need for a small double mattress?
We suggest at least 2.4m x 2.8m for the UK small double. That allows walking space on at least one side and room for the door to open. In a box room or loft conversion with sloping ceilings, this size often fits where a UK double, which we'd pair with a room of at least 2.6m x 2.8m, would not.
Is the small double the same length as a double?
Yes. The UK small double and the UK double are the same length, at 190cm. The difference is width alone: the UK small double is 15cm narrower. If you're tall and considering more length, the UK king is 10cm longer than the UK small double, though it needs a room of at least 2.7m x 2.9m.
Where can I buy the Premium Gold 2000 in a small double?
Compare the retailers listed on this page; the prices shown here are updated as retailers change them. Because 4ft is a standard UK size, small double frames, fitted sheets and bases are easy to find, so you won't be hunting for bedding to match this mattress.