Silentnight Healthy Growth Traditional Sprung Mattress Mattress
Mattress
Silentnight Healthy Growth Traditional Sprung Mattress Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
Layers
Layer Details
- Space for one to spread out: At 120cm wide, this size gives a solo adult room to roll and stretch, which means fewer nights waking pressed against the edge.
- Fits rooms a double won't: It's 15cm narrower than the UK double, which can be the difference between a door that clears the bed and one that doesn't.
- Medium firm support at growing-up age: The medium firm tension suits teenagers moving up from a single, holding back and front sleepers steady through the night.
- Standard 4ft size: Small double is an established UK size, so frames and fitted sheets are easy to find; a standard double duvet works fine on top.
- Modest room requirement: We suggest a room of at least 2.4m x 2.8m, which keeps this size realistic for box rooms, lofts and compact second bedrooms.
This size suits you if...
You sleep alone and want more width than a UK single offers, or you're buying for a teenager whose room can't spare the floor space a double demands. It also suits a guest room where couples stay for the odd weekend rather than every night, and the medium firm feel works well for back and front sleepers in either case.
Consider another size if...
You share the bed every night, because 120cm is snug for two adults long term. We'd recommend the UK double instead: it's 15cm wider, the same length, and needs a room of at least 2.6m x 2.8m.
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Is a small double big enough for the Silentnight Healthy Growth mattress to work for a teenager?
Yes, and it's arguably the sweet spot. The UK small double is 30cm wider than the UK single at the same 190cm length, so a growing teenager gains real width without the room losing much floor space. The medium firm tension suits back and front sleepers at that age, though lightweight side sleepers may find it slightly firm.
Can a couple share the Silentnight Healthy Growth in a small double?
For occasional nights, yes. Across a 120cm width, two adults will be close together, and the medium firm sprung feel keeps things stable enough for a guest room weekend. As an everyday bed for two, it's a squeeze, and the UK double, 15cm wider at the same length, is the better long-term choice.
What room size do I need for a small double mattress?
We suggest allowing at least 2.4m x 2.8m. That leaves enough space to walk round the bed and open drawers or a wardrobe. In a loft conversion or box room, the 15cm saved against a UK double often decides whether you keep usable space beside the bed rather than climbing over it.
How big is the Silentnight Healthy Growth small double in feet?
It measures 4ft x 6ft 3in, which is 120 x 190cm. That's the standard UK small double footprint, so any 4ft bed frame will take it, and small double fitted sheets are widely stocked. For the top layer, most people simply use a standard double duvet rather than hunting for a 4ft one.
Should I buy the small double or the double Silentnight Healthy Growth?
It comes down to who sleeps in it and where. Sleeping alone in a compact room, the UK small double gives you generous space without crowding the walls. Sharing nightly, take the UK double: it's 15cm wider, the same length, and we suggest a room of at least 2.6m x 2.8m for it.