Sleepeezee Severn Mattress
Mattress
Sleepeezee Severn Mattress
Size
Firmness
Construction
Depth (cm)
34
Layers
4
Layer Details
- Pillow top. A cloud-like pillow top with an additional layer of adaptive memory foam and mini pocket springs, which means a soft, cushioned surface the moment you lie down. It gives the mattress that plush hotel character without you sinking straight through to the springs.
- Graphite memory foam. Graphite memory foam relieves pressure as you sleep while dispersing heat away from the body. If ordinary memory foam has left you overheating in the past, this layer is designed to prevent that.
- Springs. Responsive springs combining mini comfort and traditional pocket springs for enhanced support. In practice that means the mattress adapts to your shape and weight rather than pushing back in one uniform way.
- Cover. A breathable bamboo cover with a silky smooth knitted surface, naturally antibacterial and hypoallergenic. A sensible choice if you have allergies or simply sleep warm.
Layer details from featherandblack.com product page, September 2026.
- More room each than a UK double: You each gain 7.5cm over the UK double, which means a little more space to turn over before you drift into your partner's half.
- Early risers disturb you less: The Severn's springs respond to movement, and with 75cm each, a partner leaving hours before you gets up slightly further from where you're still asleep.
- Extra length for tall sleepers: At 200cm, the UK king is 10cm longer than the UK double, so a partner over six foot is less likely to find their feet at the very edge.
- Space for pregnancy pillows: If you're pregnant or in the months after, the extra width leaves room for a support pillow without pushing your partner towards the edge.
- Plan for deep fitted sheets: The 34cm depth means you'll need deep-pocket king fitted sheets, and a 230 x 220cm king duvet suits this mattress size.
This size suits you if...
You share the bed every night and feel cramped on a UK double, one of you is tall enough to appreciate the 200cm length, or your working hours differ and you'd like a little more distance from an early alarm.
Consider another size if...
Your bedroom is smaller than our suggested minimum of 2.7m x 2.9m. We'd recommend the UK double instead, for which we suggest at least 2.6m x 2.8m.
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Is the Sleepeezee Severn UK king big enough for two people?
For most couples, yes. The UK king gives you 75cm each, which is 7.5cm more per person than the UK double. If you both sprawl or share the bed with a dog most nights, the UK super king gives 90cm each, although it needs a larger room.
Will a tall person fit on a Sleepeezee Severn king size?
The UK king is 200cm long, or 6ft 6in, which is 10cm longer than the UK double. That extra length is often the real reason taller couples upgrade, so if one of you is over six foot, the UK king should feel far less restrictive at the foot end.
Should we get the Severn in a UK king or UK super king?
The UK king is 30cm narrower than the UK super king but the same length, so you give up 15cm each in width. Choose the UK super king if you have the room, as we suggest at least 3m x 2.9m. Otherwise the UK king is the sensible middle ground.
Do I need special sheets for a Sleepeezee Severn king mattress?
You need king size bedding, and because the Severn is 34cm deep, look for deep-pocket fitted sheets rather than standard ones, which may pop off the corners. A 230 x 220cm king duvet is the usual match for a UK king.
Where can I buy the Sleepeezee Severn in a UK king?
Compare the retailers listed on this page. The prices shown here are updated as retailers change them, so check the table before you buy and confirm you're selecting the UK king rather than another size at checkout.