Millbrook Smooth Tech 4000 Pillow Top Single Mattress
The Millbrook Smooth Tech 4000 Pillow Top Mattress combines a wool, cotton, silk and cashgora pillow top with micro springs and pocket springs, which means a soft, cushioned surface with support zoned in seven areas.
- Cushioned pillow top feel
- Zoned support in seven areas
- Reinforced edges for sitting & sleeping
£424
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Millbrook Smooth Tech 4000 Pillow Top Mattress
More available sizes
Last seen for £678 at Mattress Online on 5th November 2026
Mattress details
Mattress
Millbrook Smooth Tech 4000 Pillow Top Mattress
Size
Firmness
Medium
Construction
Pocket Spring
Wool
Depth (cm)
32
Layers
3
Layer Details
Pillow top comfort layer
A pillow top filled with a blend of wool, cotton, silk and cashgora. It gives the surface a soft, cushioned feel without relying on foam.
Micro springs
3000 Comfonomic micro springs provide pressure relief and targeted support, so the mattress responds closely to your shape.
Pocket springs
1000 ergonomic pocket springs form the internal support system. They give the mattress its underlying support and stop the soft top from feeling vague.
Layer details from wantmattress.com product page, October 2026.
Key benefits
- Room for furniture: At 90cm wide, the UK single leaves floor space beside the bed for a desk or wardrobe, which matters in a child's bedroom where everything competes for the same wall.
- Firm edges on a narrow bed: The reinforced edge uses a rod frame and butterfly springs, which means a solo sleeper can use the full 90cm width without feeling the sides give way.
- Comfortable for guests: A medium rating with a cushioned natural-fibre top suits most visitors, so a spare room with two UK singles can host friends who would rather not share.
- Easy to rotate: Turning handles and the compact UK single footprint make rotating it a manageable job for one person, although it's single-sided and can't be flipped.
- Simple bedding: Standard single sheets and a single duvet at 135 x 200cm fit, though you'll want fitted sheets made for deeper mattresses to cover the 32cm depth.
This size suits you if...
You're kitting out a child's or teenager's room where the bed has to share space with storage and a desk, or you sleep alone and want a cushioned top without a soft, sinking feel. It also suits a guest room set up with two UK singles side by side.
Consider another size if...
You're an adult who sprawls or wants room to turn freely. We'd recommend the UK small double instead, which is 30cm wider at the same length; we suggest at least 2.4m x 2.8m for the UK small double.
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FAQ's
Will the Millbrook Smooth Tech 4000 Pillow Top single fit a bunk bed or mid sleeper?
Check carefully before buying. The UK single is the right width and length for most bunk and mid-sleeper frames, but at 32cm deep it's taller than many raised frames are designed for. Look at the frame maker's maximum mattress depth and guard rail guidance, because a deep mattress can leave too little rail above the sleeping surface.
What size room do I need for a UK single Millbrook Smooth Tech 4000 Pillow Top?
We suggest allowing at least 2.1m x 2.8m of floor space for a UK single. That leaves room to walk around the bed and open drawers. In a loft conversion with a sloping ceiling, place the 32cm-deep mattress where you'll have enough headroom to sit up comfortably.
Is a UK single Millbrook Smooth Tech 4000 long enough for a tall adult?
The UK single is 190cm long, the same as the UK small double and UK double. If you're tall and your feet reach the end, the UK single is 10cm shorter than the UK king, so the UK king is the size that adds length. For width alone, the UK small double is the gentler step up.
What sheets fit a 32cm deep single mattress?
Standard single sheets match the 90 x 190cm surface, and a single duvet at 135 x 200cm fits. The depth is the catch: the pillow top brings this mattress to 32cm, so choose fitted sheets sold as deep or extra deep. Ordinary single fitted sheets may struggle to tuck under the corners.
Should I get the Millbrook Smooth Tech 4000 in a single or small double?
Choose the UK single if floor space is tight or it's for a child. The UK single is 30cm narrower than the UK small double, while both are the same length. For an adult sleeping alone who wants more room to move, the UK small double is worth the extra space, and we suggest at least 2.4m x 2.8m for it.