Sealy Ortho Plus Bronze Mattress
Mattress
Sealy Ortho Plus Bronze Mattress
Size
Firmness
Construction
Depth (cm)
28
Layers
4
Layer Details
- Knitted Cover. A soft knitted cover that's breathable, which means heat can escape rather than build up. It helps keep you at an even temperature through the night.
- Soft White Fibres. Fibre fillings made from 100% polyester, chosen for recovery and durability. In practice that means the comfort layer springs back rather than flattening quickly.
- PostureTech CS Springs with EdgeGuard. The PostureTech Core Support spring system responds to changes in your sleeping position, targeting support where you need it most. Each spring holds an EdgeGuard high-density foam insert, which strengthens the mattress edges and extends the springs' lifespan.
- PowerPack Core. The PowerPack at the core works with the PostureTech system to keep your lumbar region comfortable and safely aligned. It's the layer doing the deep support work for your lower back.
Layer details from mattressnextday.co.uk product page, September 2026.
- The classic couples' footprint: At 135 x 190cm, the UK double leaves space for wardrobes and drawers in rooms where a UK king would dominate.
- Extra firm support for two: The PostureTech CS springs respond to each sleeper's movement, which means one partner shifting position is less likely to unsettle the other.
- Edges you can actually use: EdgeGuard foam inserts strengthen the sides, useful at this width because two people sharing get 67.5cm each and tend to sleep nearer the edge.
- A manageable size to turn: This mattress needs regular flipping, and a UK double is far easier for two people to handle than the larger sizes.
- Fits typical UK rooms: Allow at least 2.6m x 2.8m and the UK double sits comfortably with bedside tables on both sides.
This size suits you if...
You share the bed every night, want firm orthopaedic support and your bedroom is a typical UK size rather than a generous one. It also suits a guest room that hosts visiting couples, since the extra firm feel copes with a range of guests, or a solo sleeper who wants space to spread out without giving the whole room over to the bed.
Consider another size if...
You and your partner both like room to sprawl, or one of you sleeps restlessly. With 67.5cm each for two people sharing, we'd recommend the UK king instead, which is 15cm wider and 10cm longer; allow at least 2.7m x 2.9m for it.
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Is the Sealy Ortho Plus Bronze in a UK double big enough for two adults?
Yes, for most couples. The UK double is 135 x 190cm, which gives two people sharing 67.5cm each. The EdgeGuard inserts in each spring firm up the sides, so sleeping close to the edge doesn't bring that roll-off feeling. Broad-shouldered couples or restless sleepers may prefer the extra width of the UK king.
Will a UK double fit my bedroom with bedside tables on both sides?
In most cases, yes. We suggest a minimum room of 2.6m x 2.8m for the UK double, and at that size you can usually keep a bedside table on each side with walking room around the foot. If your room is tighter than that, the UK small double is 15cm narrower and the same length; allow at least 2.4m x 2.8m for it.
Is the UK double of the Sealy Ortho Plus Bronze easy to turn?
Easier than the larger sizes, though it's still a two-person job. This mattress is double-sided with fillings on both faces, so it needs flipping regularly to wear evenly. The UK double, at 4ft 6in x 6ft 3in, is about the largest size most couples can turn without a struggle, which is a quiet argument for it over the UK king.
Should I choose the UK double or size up to the UK king for this mattress?
Choose the UK double if your room is close to our suggested minimum of 2.6m x 2.8m, or if you'd rather keep floor space for furniture. The UK king is 15cm wider and 10cm longer, and we suggest at least 2.7m x 2.9m for it. Taller sleepers benefit from the extra length; the double and single share the same 190cm.
Is the UK double a good choice for a guest room?
It's a sensible one. The UK double comfortably hosts visiting couples, and double bedding is stocked everywhere at every price, so dressing a spare bed stays cheap. The extra firm feel divides opinion for occasional guests, so bear that in mind, but a mattress that's slept on less often also means the regular turning is less of a chore.