Sleepeezee Thames Mattress
Mattress
Sleepeezee Thames Mattress
Size
Firmness
Construction
Depth (cm)
29
Layers
4
Layer Details
- Pillow top. A soft, cloud-like pillow top sewn onto the surface, which means you get a plush, cushioned feel the moment you lie down. It softens the medium-firm tension underneath without undermining it.
- Wool layers. Two layers of wool from Romney sheep, a breed native to Kent. Wool breathes and wicks moisture, which helps keep you at a steadier temperature through the night.
- Pocket springs. Individually pocketed springs that respond to your shape and movements. Because each spring moves on its own, you get support where you press down and less disturbance when a partner shifts.
- Nano springs. A layer of 1,000 smaller nano springs that contour more closely to your body. They fine-tune the support from the main springs, particularly around shoulders and hips.
Layer details from featherandblack.com product page, September 2026.
- 90cm each for two sharers: Each of you gets 90cm of width, 15cm more than the UK king gives, which means a restless partner's turning happens further away from you.
- Springs and distance working together: Individually pocketed springs limit how far movement travels, and at 180cm wide there is more mattress between you, so the two effects add up.
- Room for a child at 3am: When a small child climbs in during the night, 6ft of width lets two adults and a little one all lie flat instead of clinging to an edge.
- A spot for a large dog: If a big dog sleeps on the bed as routine, the extra 30cm over the UK king gives it a place without it taking yours.
- Wool for a busier bed: More bodies mean more warmth, and the wool layers breathe and wick moisture, which helps a shared UK super king stay a little more comfortable.
- In proportion in a large room: In a period house or a generous master bedroom, the UK super king fills the space properly where a UK king can look slightly lost.
This size suits you if...
You share with a partner who tosses and turns, your children or a large dog regularly join you overnight, or your bedroom is big enough that a UK king would look undersized.
Consider another size if...
Your bedroom is smaller than 3m x 2.9m, or the two of you sleep calmly without night-time visitors. We'd recommend the UK king instead, which needs at least 2.7m x 2.9m.
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Is the Sleepeezee Thames super king big enough for two adults and a child?
For occasional night-time visits, yes. The UK super king gives two adults 90cm each, and that margin is what leaves room for a small child to settle between you without anyone ending up on the edge. If a child sleeps with you every night as they get older, the space will start to feel tighter.
How much bigger is the Sleepeezee Thames super king than the king?
The UK super king is 30cm wider than the UK king, and both are 200cm long, so you gain width only. For two people sharing, that means 90cm each on the UK super king against 75cm each on the UK king, a difference of 15cm per person.
What size bedroom do I need for a Sleepeezee Thames super king?
We suggest at least 3m x 2.9m, with around 3.5m x 3.2m feeling comfortable once bedside tables and wardrobe doors are in. Check that the bedroom door can swing open fully with the bed in place, as this is often where a UK super king catches people out.
Is a super king worth it if my partner is a restless sleeper?
Often, yes. The pocket springs in the Thames reduce how much movement spreads across the mattress, but distance matters too. The UK super king puts 90cm of width on each side, so a partner who turns over a lot is further away than on any smaller size of this mattress.
Will a UK super king Thames fit in a loft conversion bedroom?
It can, but the sloped ceiling usually decides which wall the bed goes against. A 180cm wide mattress needs full headroom where you sit up and space to get out on both sides. Measure the usable floor with full headroom rather than the whole room, and allow at least 3m x 2.9m of it.