Relyon Tonedale 4500 Natural Heritage Mattress
Mattress
Relyon Tonedale 4500 Natural Heritage Mattress
Size
Firmness
Medium
Construction
Depth (cm)
37
Layers
2
Layer Details
- Pillow Top. A plump pillow top of sustainably sourced British wool, which means a soft, cushioned surface that also helps regulate temperature naturally. Wool wicks moisture away, so it stays fresher through the night than many synthetic fillings.
- Pocket Springs. Up to 4,500 springs, each housed in its own fabric pocket so they compress independently. In practice that means support tailored to where your body needs it, with pressure relief at the shoulders and hips.
Layer details from mattressnextday.co.uk product page, September 2026.
- More space each: You each get 75cm of width, which means 7.5cm more per person than the UK double and a little more room to turn without meeting an elbow.
- Less felt movement: Across a wider surface, individually pocketed springs have more room to absorb a partner turning over, so early risers disturb late sleepers slightly less.
- Length for taller sleepers: At 200cm long, the UK king is 10cm longer than the UK double, so a partner over six foot is less likely to have their feet off the end.
- Room to shift position: The extra width helps if one of you needs propping pillows during pregnancy or recovery, because the wool pillow top stays comfortable wherever you settle.
- A deep bed in a big footprint: At 37cm deep, a UK king of this mattress is a substantial piece of furniture, so check your bed frame and fitted sheet depth before ordering.
This size suits you if...
You share the bed and have started to feel cramped in a UK double, or one of you gets up hours before the other and you want fewer disturbances. It also suits you if one partner is over six foot and the extra 10cm of length matters as much as the width.
Consider another size if...
Your bedroom is smaller than our suggested 2.7m x 2.9m once wardrobes are in. The UK double would suit you better, and we suggest at least 2.6m x 2.8m for it.
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Is the Relyon Tonedale 4500 UK king big enough for two adults?
For most couples, yes. The UK king gives 75cm each, 7.5cm more per person than the UK double. If you both sprawl, or a dog regularly joins you, the UK super king gives 90cm each and may be the better choice.
Will my partner's movement disturb me less on a UK king Relyon Tonedale 4500?
It should help. The pocket springs move independently, and the UK king gives each of you 75cm, so there is more distance between you. You may still feel a heavy partner getting in or out, but less than on a narrower bed.
Is the Relyon Tonedale 4500 long enough for someone over 6ft?
In a UK king, it measures 200cm long, which is 10cm longer than the UK double and the UK small double. The UK super king is the same length, so sizing up beyond the UK king adds width but no extra length.
What room size do I need for a UK king Relyon Tonedale 4500?
We suggest allowing at least 2.7m x 2.9m, with 3.2m x 3.2m more comfortable if you want bedside tables and space to walk round. New build master bedrooms can feel tighter than their plans suggest once built-in wardrobes are fitted, so measure the usable floor space.
Should I get the Relyon Tonedale 4500 in a UK king or a UK super king?
The UK king is 30cm narrower than the UK super king but the same length, giving 15cm less each. Choose the UK super king only if your room allows at least 3m x 2.9m and you want noticeably more personal space.