Wentworth Mercer Premium Silk 11000 Pocket Mattress
Mattress
Wentworth Mercer Premium Silk 11000 Pocket Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
28
Layers
6
Layer Details
- Silk. A luxurious natural fibre that gives the sleep surface a sumptuous, breathable feel. It stays resilient over time rather than flattening quickly.
- Wool. Wool is a natural insulator with good temperature regulation, which means it helps keep you comfortable all year round. Cosy in winter, breathable in summer.
- Cotton. Natural cotton fibres wick moisture away from your body and help regulate temperature. The result is a fresher-feeling sleep surface, especially if you run warm.
- Soft White Fibres. Soft synthetic fillings add a cosy, cushioned feel to the comfort layers. They are durable and hold their shape well.
- Mini Pocket Springs. Small individually cased springs sit near the surface for added comfort and gentle pressure relief. They also cut down motion transfer, so you feel less of a partner's movement.
- Pocket Springs. The main support layer: individual springs encased in cloth pockets that respond to each part of your body separately. That means more tailored support along your spine than a traditional open-coil system gives.
Layer details from mattressonline.co.uk product page, September 2026.
- Room for bedside tables: We suggest at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm, so most ordinary bedrooms keep space for a bedside table on each side.
- Less disturbance at close quarters: You sleep nearer your partner on a UK double than on a UK king, and the mini pocket spring layer cuts down how much of their turning reaches you.
- Fillings that handle two people's warmth: Two bodies build up heat on a shared bed, and the wool and cotton fillings help regulate temperature and wick moisture, so the surface feels fresher through the night.
- A sensible spare room choice: For visiting couples, the UK double offers a proper shared bed without swallowing a second bedroom that may also need to hold a wardrobe and a chest of drawers.
- Bedding that is easy to find: Double sheets and a 200 x 200cm double duvet fit, which are stocked almost everywhere and simple to replace when you are kitting out a first flat.
This size suits you if...
You share the bed with a partner in a typical UK bedroom and want to keep space for bedside tables, or you are furnishing a spare room where visiting couples need a comfortable shared bed without the room feeling full.
Consider another size if...
You and your partner both like to spread out, or one of you is tall. We'd recommend the UK king instead, which is 10cm longer; allow at least 2.7m x 2.9m for the UK king.
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.
How much space does each person get on the Wentworth Mercer Premium Silk 11000 UK double?
Two people sharing the UK double get 67.5cm each. That is 7.5cm less each than the UK king and 22.5cm less each than the UK super king. Most couples find it comfortable, although if either of you sleeps starfish-style it can feel a little snug.
Will a Wentworth Mercer Premium Silk 11000 UK double leave room for bedside tables?
In most cases, yes. We suggest a bedroom of at least 2.6m x 2.8m for a UK double, and around 3m x 3m is the comfortable norm. At that size you can usually fit a bedside table on each side and still walk round the bed easily.
What are the Premium Silk 11000 double dimensions in feet and inches?
The UK double measures 4ft 6in x 6ft 3in, which is 135 x 190cm. The mattress is 28cm deep, so check that your fitted sheets have deep enough pockets before you buy.
Should I get the UK double or UK small double Premium Silk 11000 for a small bedroom?
The UK double is 15cm wider than the UK small double, and the two are the same length. If your room is under our suggested 2.6m x 2.8m, the UK small double needs at least 2.4m x 2.8m and may fit better, but it is tighter for two people sharing.
Will I feel my partner move on the Premium Silk 11000 in a UK double?
You sit closer together on a UK double, so movement matters more. The mini pocket springs near the surface reduce motion transfer, which means a restless partner is less likely to wake you. If disturbance is a real worry, remember that the UK double gives 7.5cm less each than the UK king.