Tuft & Springs Affinity Ortho 1500 Gel Hybrid Mattress
Mattress
Tuft & Springs Affinity Ortho 1500 Gel Hybrid Mattress
Size
Firmness
Construction
Depth (cm)
29
Layers
3
Layer Details
- Knitted Cover. A soft knitted cover that's breathable, which means heat can escape rather than build up around you. It helps keep your temperature even through the night.
- Cooling Gel Fusion™ Memory Foam. Gel memory foam that feels cool to the touch and gently contours to your body. You get pressure relief at the shoulders and hips without the warmth traditional memory foam is known for.
- 1500 Pocket Springs. Each of the 1500 springs sits in its own fabric pocket and works independently of its neighbours. That means support adjusts to your shape and movement transfers less across the mattress.
Layer details from mattressnextday.co.uk product page, September 2026.
- Leaves floor space free: At 3ft x 6ft 3in, the UK single leaves room beside the bed for a desk, a wardrobe or a stack of toy storage in a small bedroom.
- Two beds, one room: In a room shared by siblings or a guest room set up with two beds, a pair of UK singles can still leave a clear walkway between them.
- Proper support for growing bodies: The medium firm feel and 1500 independent pocket springs give teenagers the steady support they tend to need, rather than the thin foam often sold for children's beds.
- A cooler feel in a small room: Compact bedrooms can get stuffy, and the gel memory foam layer feels cool to the touch, which means less trapped warmth than traditional memory foam.
- Fits a provided frame: If you're moving into a student room or first flat where the bed frame is supplied but the mattress is not, a UK single matches the most common frame size.
This size suits you if...
You sleep alone and want hybrid support without giving up floor space, you're furnishing a child's or teenager's room where the bed shares space with a desk and storage, or you're kitting out a spare room that also serves as a home office.
Consider another size if...
You share the bed, or your bunk or mid sleeper frame needs a slim mattress. For couples we'd recommend the UK double instead, which gives 67.5cm each; allow at least 2.6m x 2.8m.
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Will the Affinity Ortho 1500 UK single fit a bunk bed or mid sleeper?
It will fit the frame's length and width, but at 29cm deep it is thicker than many raised frames are designed for. A deep mattress reduces how far the safety rail rises above the sleeping surface. Check the frame maker's maximum mattress depth before buying for a bunk, cabin or mid sleeper.
What size is the Affinity Ortho 1500 UK single in feet?
The UK single measures 3ft x 6ft 3in, or 90 x 190cm. It is the same length as the UK double and the UK small double, so the extra room in those sizes comes from width alone.
How much bedroom space do I need for a UK single mattress like the Affinity Ortho 1500?
We suggest allowing at least 2.1m x 2.8m of floor space for a UK single. That leaves enough room to get in and out of bed comfortably and open a wardrobe or pull out a desk chair beside it. In a loft conversion, place it along the lowest wall where only a narrow footprint fits.
Is the Tuft & Springs Affinity Ortho 1500 in a single good for a teenager?
For most teenagers it is a sensible choice. The medium firm feel suits back and stomach sleepers, although a slim teenager who sleeps on their side may find the shoulders a little firm. Very tall teenagers should bear in mind that the UK king is 10cm longer than the UK single.
Can two people share an Affinity Ortho 1500 UK single?
Not comfortably night after night. The UK single is designed for one person, and the independent springs cannot make up for the lack of width. The UK double is 45cm wider and gives 67.5cm each for two sharing, which makes it the better starting point for couples.