Sealy Waltham Single Mattress
The Sealy Waltham is a medium-feel latex mattress, handmade in the UK, with a depth of 29cm.
- Eases pressure without sinking in
- Zoned springs for even support
- Reinforced edges, no roll-off feeling
£579
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Sealy Waltham Mattress
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Mattress details
Mattress
Sealy Waltham Mattress
Size
Firmness
Medium
Construction
Latex
Depth (cm)
29
Layers
4
Layer Details
Cover
A smooth quilted surface in knit fabric. It gives the sleeping surface a soft, finished feel from the first night.
Filling
A latex filling that provides pressure relief with a resilient, bouncy feel. In practice, that means cushioning for your hips and shoulders without the stuck-in sensation some foams create.
Spring System
Sealy's proprietary PostureTech spring system, built for even weight distribution and zoned support. Different areas of the mattress respond differently, so heavier parts of your body get firmer backing.
Edge Support
Sealy's EdgeGuard extends the usable sleeping area and supports durability. You can sit or sleep near the edge without the sides collapsing.
Layer details from furniturevillage.co.uk product page, September 2026.
Key benefits
- Fits the smallest bedrooms: At 90cm wide, the UK single leaves room for a desk, wardrobe or toy storage in a child's room where every bit of floor counts.
- A resilient feel for growing sleepers: The latex filling springs back quickly, which means restless children and teens can change position easily rather than sinking into one spot.
- Full width you can actually use: Sealy's EdgeGuard reinforces the sides, useful on a narrow single where sleeping near the edge is unavoidable.
- Check it against raised frames first: The Waltham is 29cm deep, on the taller side for bunks and mid sleepers, so measure your frame's safety rail height before buying.
- Cheap, easy bedding: Standard single sheets and a 135 x 200cm duvet fit, and both are the most widely stocked and affordable bedding of any UK size.
This size suits you if...
You're buying for a child's or teenager's room where the bed shares space with a desk and storage, you're a single adult in a compact room or first flat, or you're kitting out a spare room that doubles as an office and want a proper mattress rather than a fold-out.
Consider another size if...
You're an adult who spreads out at night or shares the bed even occasionally. We'd recommend the UK double instead, which is 45cm wider and the same length; allow at least 2.6m x 2.8m of floor space for it.
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FAQ's
Will the Sealy Waltham single fit a bunk bed or mid sleeper?
The width and length match standard UK bunk and mid-sleeper frames, but the Waltham is 29cm deep, which is taller than many raised frames allow. Safety guidance for bunks requires the mattress to sit well below the guard rail, so measure from the base to the top of the rail before ordering.
Is the Sealy Waltham UK single suitable for a child?
Yes, with one caveat. The medium latex feel is responsive rather than sinking, which suits lighter bodies, and the springs give zoned support as children grow. Very young children moving up from a cot may find any adult-grade mattress firmer than expected, so it's better suited to school age upwards.
How much floor space does a UK single mattress need?
The mattress itself is 90 x 190cm, and we suggest a room of at least 2.1m x 2.8m so there's space to walk alongside and open doors or drawers. That makes it a realistic fit for box rooms, loft conversions with a narrow usable strip, and spare rooms that also hold a desk.
Can two Sealy Waltham singles work in a shared or guest room?
Yes, and it's a sensible setup where siblings share or guests may not know each other well. Two singles at 90cm each need a walkway between them, so measure your room against roughly two mattress widths plus gaps. Each sleeper gets the full latex and spring build to themselves.
Is the single Waltham long enough for a tall adult?
At 190cm (6ft 3in) it matches the UK small double and UK double for length, so most adults fit fine. If you're very tall, the extra 10cm of the UK king is where the length gain sits, though that's a big jump in width too, needing a room of at least 2.7m x 2.9m.