Copper Fresh Envy Supreme Mattress
Mattress
Copper Fresh Envy Supreme Mattress
Size
Firmness
Firm
Construction
Depth (cm)
25
Layers
5
Layer Details
- Knitted cover. A soft knitted finish that adds a little cosiness and warmth. It also enhances airflow and breathability, which helps you sleep cooler.
- Copper layer. A thin layer of pure copper that is highly conductive, drawing excess heat away from your body as you sleep. Copper is also naturally antimicrobial, a reassuring bonus for allergy-conscious sleepers.
- Memory Foam. 30mm of memory foam that cradles your body shape, which means pressure points like hips and shoulders get some relief. It's a modest layer, in keeping with the firm feel.
- Reflex Foam. Layers of reflex foam that add support and protect the spring system beneath. This section also includes foam encapsulated edge support, so the sides stay stable when you sit or sleep near the edge.
- Pocket Springs. A core of 2000 pocket springs, each encased in its own fabric pocket. They respond individually to weight and movement, which means responsive support and less disturbance from a restless partner.
Layer details from mattressonline.co.uk product page, September 2026.
- Real space for one sleeper: The UK small double is 30cm wider than the UK single, which means a solo adult can shift position freely without hanging an arm off the edge.
- Fits rooms a double can't: At 15cm narrower than the UK double, it can be the difference between a bed that fits a box room and one that blocks the door.
- Cooling that suits a smaller bed: The copper layer draws heat away from your body, useful in this size because one sleeper's warmth concentrates in a narrower sleeping area.
- Usable width right to the edge: Foam encapsulated edge support keeps the sides stable, which matters more at 120cm wide, where every centimetre of sleeping surface counts.
- Firm support for occasional sharing: The 2000 pocket springs respond to each body individually, so a couple staying the odd night won't roll into each other on the firmer surface.
This size suits you if...
You sleep alone most nights and have outgrown a single but can't spare the floor space a UK double demands, your loft conversion or box room leaves no walkway beside anything wider, or you're furnishing a guest room where couples stay occasionally rather than nightly. The firm feel suits back and front sleepers best, so this size and mattress pairing favours a solo adult who likes solid support.
Consider another size if...
You share the bed every night, as 120cm is a squeeze for two on a firm surface long term. We'd recommend the UK double instead, which is 15cm wider; allow at least 2.6m x 2.8m for it.
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.
Is a UK small double big enough for two on the Copper Fresh Envy Supreme?
For occasional nights, yes. The pocket springs respond to each sleeper separately and the firm surface doesn't sag toward the middle, so two adults can share comfortably for a weekend stay. For every night, 120cm is tight, and the UK double at 135cm wide gives a couple noticeably more room for the same length.
What room size do I need for the Copper Fresh Envy Supreme small double?
We suggest at least 2.4m x 2.8m. That leaves enough clearance to walk round the bed and open drawers or a door. In a loft conversion, check the width against your sloping walls too, since the UK small double at 120cm wide often fits where a standard double leaves no standing room.
Is the Copper Fresh Envy Supreme UK small double good for a teenager?
It's a sensible step up. The UK small double is 30cm wider than the UK single but exactly the same length, so a growing teenager gains room to sprawl without the bed swallowing the floor space. The firm feel suits front and back sleepers, though a lightweight side sleeper may find it a little unforgiving.
Does the copper layer make more difference in a smaller size?
The copper layer works the same way in every size, drawing heat away from your body. What changes is that a solo sleeper on a UK small double often sleeps nearer the centre all night, so heat builds in one spot. The conductive layer helps disperse it rather than letting it accumulate.
How does the small double compare with the UK king in this mattress?
The UK small double is 30cm narrower and 10cm shorter than the UK king, and it needs less room: we suggest 2.4m x 2.8m against 2.7m x 2.9m for the UK king. If you're tall or share nightly, the extra length of the UK king matters; for one sleeper in a compact room, the UK small double is the practical pick.