Mattress Online Contract Pocket Pro Sprung King Size Mattress
The Contract Pocket Pro is Mattress Online's own hybrid, pairing 1000 pocket springs with recycled foam comfort layers for a medium feel.
- Removable, machine-washable cover
- Adapts to changes in position
- 100-night trial & 10-year guarantee
£465
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Mattress Online Contract Pocket Pro Sprung Mattress
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Mattress details
Mattress
Mattress Online Contract Pocket Pro Sprung Mattress
Size
Firmness
Medium
Construction
Foam
Pocket Spring
Eco-Friendly
Depth (cm)
20
Layers
4
Layer Details
Knitted cover
A soft-touch knitted cover that's removable and machine washable, which means spills and stains needn't be permanent. That's a genuinely useful feature for guest rooms and children's beds.
Ecofoam
Two layers of Ecofoam made from 100% recycled foam sit near the surface. You get cushioned comfort with a lighter environmental footprint.
Reflex foam
A 2.5cm layer of Reflex foam adds a slightly softer feel, moulding to your body for pressure relief while promoting spinal alignment. It also adds durability to the comfort layers above the springs.
Pocket springs
1000 pocket springs form the support core, each one sensing movement and adapting independently. This means the mattress reacts to changes in weight and position, giving steady support without excessive motion transfer.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- 75cm each, every night: Two people sharing a UK king get 75cm of width each, enough to change position without brushing elbows.
- Independent springs across a wider bed: The 1000 pocket springs respond to each sleeper separately, and at this width one partner getting up at 5am disturbs the other far less.
- 200cm of length: The UK king is 10cm longer than the UK double, which matters if one of you is approaching six foot and tired of feet hanging off the end.
- A manageable weight to rotate: At 20cm deep this is a slimmer hybrid, so rotating a king-sized mattress, which you'll need to do since it's single-sided, is less of a struggle.
- Washable cover at family scale: The knitted cover is removable and machine washable, useful on a bed this size where a dog has quietly made itself a permanent third occupant.
This size suits you if...
You share the bed every night and a double has started to feel cramped, especially if you sleep on different schedules and want less disturbance when one of you gets up early. It also suits couples where one partner is tall, since the extra 10cm of length over a UK double is often the upgrade that matters more than width. Your room measures at least 2.7m x 2.9m.
Consider another size if...
Your bedroom falls under our suggested 2.7m x 2.9m minimum, common in newer builds once wardrobes go in. We'd recommend the UK double instead, which needs at least 2.6m x 2.8m and still gives 67.5cm each for two sharing.
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FAQ's
Is the Contract Pocket Pro in a UK king wide enough for two people?
Yes, comfortably for most couples. At 150cm wide you each get 75cm, and the 1000 pocket springs move independently, so one person shifting or getting up transfers less movement across the bed. If either of you sprawls, or a dog routinely joins you, the extra width over a smaller size is where you'll feel the difference.
What room size do I need for a UK king Contract Pocket Pro?
We suggest at least 2.7m x 2.9m for a UK king, which leaves room to walk around the bed and open drawers. That guidance is ours rather than the manufacturer's. Measure your room with wardrobes and bedside tables in place, since a new build master can be tighter than the floor plan suggests.
Is the UK king Contract Pocket Pro long enough for tall sleepers?
At 200cm long, it's 10cm longer than the UK double, and that extra length is often the real reason taller sleepers upgrade. If one of you is over six foot, a 190cm mattress can leave feet at the edge; the UK king removes that problem without needing a wider room than most kings do.
How much bigger is the king than the double in this mattress?
The UK king is 15cm wider and 10cm longer than the UK double. In sharing terms, the UK double gives 67.5cm each, so the UK king gives 7.5cm more per person. That sounds modest on paper, but it's the difference between touching every time someone rolls over and having a clear margin of your own.
Where can I buy the Contract Pocket Pro in a UK king?
Compare the retailers listed on this page; the prices shown here are updated as retailers change them, so what you see is current rather than a snapshot. Stock and pricing for the UK king can differ from the UK single and UK double, so check the size you actually want before clicking through.