Millbrook Smooth Tech Ultra 10000 Pocket Single Mattress
The Millbrook Smooth Tech Ultra 10000 is a pocket spring mattress with a soft to medium feel, which means it suits sleepers who want gentle cushioning rather than a firm surface.
- Softer feel suits side sleepers
- Contours closely to shoulders & hips
- Natural fibres reduce heat build-up
£944
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Millbrook Smooth Tech Ultra 10000 Pocket Mattress
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Mattress details
Mattress
Millbrook Smooth Tech Ultra 10000 Pocket Mattress
Size
Firmness
Medium Soft
Construction
Pocket Spring
Wool
Natural
Depth (cm)
35
Layers
3
Layer Details
Microquilted Cover
A micro-quilted cover gives the mattress a smooth, soft finish. It's the first thing you'll feel through your sheet, and it sets the gentle tone for the layers beneath.
Comfort Layer
A blend of wool, silk, cashgora and cotton designed for a cloud-like feel. These natural fibres also breathe well, which means less overnight heat build-up than synthetic alternatives.
Pocket Springs Support System
2,000 regular pocket springs work alongside 8,000 mini springs, each stitched into its own individual fabric pocket. Because every spring moves independently, the mattress can relieve pressure where you need it rather than pushing back uniformly.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- Leaves room for everything else: At 90 x 190cm (3ft x 6ft 3in), the UK single frees up space for a desk, wardrobe or toy storage, and we suggest a room of at least 2.1m x 2.8m.
- A soft feel that suits lighter bodies: The medium soft comfort tends to suit lighter sleepers such as most children and teens, who are less likely to sink too far than a heavier adult.
- Cooler in a small, warm room: Wool, silk, cashgora and cotton fillings breathe better than synthetic foam, which means a compact box room is slightly less likely to feel stuffy overnight.
- Guests get a bed each: Two UK singles in a spare room let visiting friends or siblings sleep in the same room without sharing a mattress or feeling each other move.
- Close contouring for solo side sleepers: With 2,000 pocket springs working alongside 8,000 mini springs, a single adult lying on their side gets cushioning shaped around the shoulder and hip.
This size suits you if...
you sleep alone in a smaller bedroom and want a softer, natural-filled surface, you're furnishing a child's or teenager's room where floor space is tight, or you're setting up a spare room with a pair of beds for guests.
Consider another size if...
you're an adult who likes room to spread out, or a partner or child regularly ends up in the bed with you. We'd recommend the UK small double instead: it's 30cm wider, the same length, and we suggest at least 2.4m x 2.8m.
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FAQ's
Will the Millbrook Smooth Tech Ultra 10000 UK single fit a bunk bed or mid sleeper?
The 90 x 190cm dimensions match a standard UK single frame. The catch is depth: at 35cm this is a deep mattress, and raised frames usually set a maximum mattress depth so the side rail stays high enough. Check your bunk or mid sleeper maker's guidance before buying, because many are designed for thinner mattresses.
What size room do I need for a UK single Millbrook Smooth Tech Ultra 10000?
We suggest allowing at least 2.1m x 2.8m of floor space for a UK single. That gives you room to walk around the bed and open drawers, which matters in a child's room also holding a wardrobe and desk, or in a loft conversion where the bed sits under the slope.
Is a UK single Millbrook Smooth Tech Ultra 10000 comfortable for an adult?
For a solo adult of lighter or average build, yes: the medium soft feel and mini springs cushion shoulders and hips well. The 90cm width feels snug if you're broad or restless, though, and heavier adults may sink further than is comfortable on this softer surface.
Millbrook Smooth Tech Ultra 10000 UK single or UK small double: which should I buy?
Choose the UK single if one person sleeps in the bed and floor space is limited. Choose the UK small double if you want more room to turn over or occasionally share: it's 30cm wider, the same length, and we suggest at least 2.4m x 2.8m for the UK small double.
Can I put two Millbrook Smooth Tech Ultra 10000 single mattresses in a guest room?
Yes, and a pair suits guests who'd rather not share a mattress, such as friends or older siblings. Plan for noticeably more floor than our 2.1m x 2.8m guidance for one UK single, since you'll want a walkway between the two beds. Compare the retailers listed on this page, as the prices shown are updated regularly.