Relyon Heyford Ortho 1500 Pocket Mattress
Mattress
Relyon Heyford Ortho 1500 Pocket Mattress
Size
Firmness
Extra Firm
Construction
Depth (cm)
32
Layers
7
Layer Details
- Damask cover. A finely woven damask fabric, which means a soft-touch surface that doesn't trap heat. It's a durable weave built for long-term use.
- Soft white fibres. Two layers of soft white fibres sit just beneath the cover to improve breathability. In practice, this helps the mattress feel fresher through the night.
- Cotton and polyester blend. A breathable blend of natural cotton and polyester that wicks moisture away from you. This keeps air circulating rather than building up warmth.
- Rebound polyester and cotton fibres. A further layer of rebound polyester and cotton fibres adds a touch of comfort. It softens the surface slightly without compromising the firm feel.
- Dense polyester layer. A dense polyester layer that reinforces the firm, orthopaedic character of the mattress. This is where much of the extra firm feel comes from.
- Spring insulation pad. An insulation pad sits between the comfort layers and the springs. It protects the spring unit and adds durability over the years.
- Pocket springs. 1500 pocket springs, each secured in its own fabric pocket so they move independently. That means support tailored to your shape and less disturbance from a restless partner.
Layer details from mattressonline.co.uk product page, September 2026.
- Room for two without dominating the bedroom: At 135 x 190cm, this size fits where a UK king would crowd the room, which matters if you want bedside tables on both sides.
- Independent springs across a shared bed: The 1500 pocket springs move separately, so within your 67.5cm each a restless partner disturbs you less than a connected spring unit would.
- Firm support that holds across the width: The extra firm build stays consistent edge to middle, so neither sleeper rolls towards the centre on a shared 135cm surface.
- A sensible fit for guest rooms: A UK double suits visiting couples, and the firm, breathable cotton and polyester build copes with different guests rather than being shaped to one sleeper.
- Easy bedding at any budget: Double sheets and a 200 x 200cm double duvet are stocked everywhere, so dressing this size costs less than kitting out a larger bed.
This size suits you if...
You're a couple in a typical UK bedroom where a UK king would leave too little floor space, you're furnishing a guest room for visiting pairs, or you sleep alone and want spreading room on a firm orthopaedic surface. Allow at least 2.6m x 2.8m of floor space, and both sleepers should be happy with an extra firm feel, because this mattress gives no cushioned sinkage.
Consider another size if...
You share every night and either of you is broad shouldered or a fidgety sleeper, because 67.5cm each can feel snug. We'd recommend the UK king instead: 15cm wider, 10cm longer, 75cm each, needing a room of at least 2.7m x 2.9m.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
Is the Relyon Heyford Ortho 1500 double big enough for two adults?
It works for most couples. The UK double gives 67.5cm each for two people sharing, and the 1500 pocket springs limit disturbance when one of you turns over. That said, the extra firm surface means you won't sink towards each other, which helps the width feel usable. Larger builds or restless sleepers may prefer the UK king, which gives 75cm each.
What room size do I need for the Heyford Ortho 1500 in a UK double?
We suggest at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That allows walking space on both sides and room for bedside tables, which is exactly why couples in typical UK bedrooms choose the double over the UK king, where we'd allow at least 2.7m x 2.9m.
Should a couple choose the double or the king in this mattress?
It comes down to your room. The UK king is 15cm wider and 10cm longer than the UK double, giving 75cm each rather than 67.5cm, a difference you feel every night. But the king needs at least 2.7m x 2.9m of floor space. If fitting wardrobes, drawers and both bedside tables matters, the UK double is the practical choice.
Will the double size Heyford Ortho 1500 fit up a narrow staircase?
At 135cm wide and 32cm deep, this is a substantial traditional sprung mattress, and it can't be rolled or folded like a boxed foam model. Measure turning points on older terraced staircases and tight new build landings before ordering, and check the doorway into the bedroom itself. The narrower UK single and UK small double are easier to manoeuvre.
Is a double a good size for a guest bedroom?
Yes, it's the standard choice. A UK double accommodates visiting couples as well as solo guests, and at 135 x 190cm it usually leaves room for a wardrobe and drawers in a second bedroom. The Heyford Ortho 1500's extra firm feel divides opinion, though, so warn softer-sleeping guests, or size down to a UK single if guests mostly come alone.