Harrison Spinks Tennyson Mattress
Mattress
Harrison Spinks Tennyson Mattress
Size
Firmness
Construction
Depth (cm)
30
Layers
3
Layer Details
- Pillow top. A cloud-like pillow top with additional micro springs, which means a softer, cushioned surface sitting above the firm support below. It's sewn on rather than separate, so the comfort layer stays put.
- Natural fibres layer. Generous layers of British wool, naturally cooling flax and farm-grown hemp. These fibres wick moisture and regulate temperature, which should help if you tend to sleep warm.
- Pocket spring layers. 7,440 responsive springs in total, combining high-density micro, Posturfil and Cortec pocket springs. Each spring moves independently, so you get support where your body needs it and less motion transfer across the bed.
Layer details from featherandblack.com product page, September 2026.
- Real width for one sleeper: At 120cm wide, a solo adult gets 30cm more room across the bed than a UK single, which means turning over without meeting the edge.
- Fits compact bedrooms: It's 15cm narrower than a UK double, which can be the difference between a door that clears and one that doesn't in a box room or loft conversion.
- 7,440 springs even at this size: The full micro, Posturfil and Cortec spring construction is present in the UK small double, so the fine-grained, adaptive support isn't diluted in the smaller footprint.
- Copes with the occasional shared night: Two guests can share for a weekend, and the independent pocket springs limit motion transfer, though nightly couples would find 120cm a squeeze.
- Easy bedding to find: 4ft is a standard UK size, so small double fitted sheets are widely stocked, and check they'll stretch over the Tennyson's 30cm depth.
This size suits you if...
You're a solo adult who has outgrown a UK single and wants firm, natural-filled support with space to stretch, your bedroom, loft conversion or studio can't take a standard double without losing walking room, or you're furnishing a guest room where couples stay occasionally rather than every night. Allow at least 2.4m x 2.8m of floor space for the UK small double.
Consider another size if...
You share the bed every night, because 120cm across two adults leaves little room to sleep apart on a firm surface. We'd recommend the UK double instead, allowing at least 2.6m x 2.8m of room.
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Is a small double Tennyson big enough for a couple?
For occasional nights, yes. The Tennyson's pocket springs move independently, so a restless guest disturbs their partner less than on an open coil bed. For every night, though, 120cm is tight for two adults, and the firm feel gives you little softness to sink apart into. Full-time couples should look at the UK double, which is 15cm wider.
What room size do I need for the Tennyson in a UK small double?
We suggest allowing at least 2.4m x 2.8m. That gives you space to walk round the bed and open drawers rather than shuffling sideways. The mattress itself is 120 x 190cm, and its 15cm width saving over a UK double is often what makes a box room or loft conversion workable.
How much bigger is the small double than a single in this mattress?
The UK small double is 30cm wider than the UK single, and the two are exactly the same length at 190cm. That extra width is the whole point: one adult gets noticeably more room to turn and spread out, without the bed demanding a bigger room the way a UK double or UK king would.
Is the small double a good choice for a teenager?
Often, yes. A teenager who has outgrown a single gets 30cm more width without surrendering the floor space a UK double takes. One caveat: the Tennyson is a firm mattress, and a lightweight side sleeper may find it doesn't cushion the shoulder and hip enough, so weigh feel as well as footprint.
What bedding fits the Tennyson in this size?
You need small double (4ft) fitted sheets, and because the Tennyson is 30cm deep, look for deep or extra-deep versions so the corners stay put. A standard double duvet works well on a 120cm wide bed, giving a generous overhang for one sleeper or reasonable cover for two on an occasional shared night.