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.
- Leaves room for everything else: At 3ft x 6ft 3in, the UK single fits alongside a wardrobe, desk and toy storage, so a child's room still has floor to play on.
- Our room guidance: We suggest allowing at least 2.1m x 2.8m, which covers a box room, a study that hosts guests or a first flat bedroom.
- Wool for warm young sleepers: The British wool pillow top wicks moisture away, which suits a teenager who kicks the duvet off because foam mattresses feel stuffy.
- Two singles for guests: A pair of UK singles in a spare room lets visitors who are friends or siblings sleep side by side without feeling each other move.
- Deep, so choose the frame carefully: The 37cm depth gives a plush, grown-up feel on a divan, although it sits high and is a poor match for most bunk or cabin beds.
This size suits you if...
You sleep alone and would rather have wool than memory foam, you're kitting out a child's or teenager's room with a low frame or divan, or you're setting up a spare room with two single beds for visiting guests.
Consider another size if...
You share the bed with a partner most nights. For two sleepers we'd recommend the UK double instead, which gives 67.5cm each; allow at least 2.6m x 2.8m.
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Is the Relyon Tonedale 4500 UK single suitable for a bunk bed or mid sleeper?
Usually not. The mattress is 37cm deep, and raised frames such as bunks, cabin beds and mid sleepers typically set a maximum mattress depth so the guard rail stays high enough to be safe. Check the frame maker's guidance before buying; a deep pillow top mattress like this one is better suited to a standard bed or divan base.
What size bedroom do I need for a Relyon Tonedale 4500 UK single?
We suggest at least 2.1m x 2.8m of floor space for a UK single. That leaves enough room to walk around the bed and open a wardrobe, which matters in a child's room or a study that doubles as a guest room. Measure doorways too, since a 37cm deep mattress is a little bulkier to carry upstairs.
Is a UK single long enough for a tall teenager?
A UK single is 190cm long, the same length as the UK double. If your teenager is already tall and still growing, the UK king is 10cm longer, although it is also 60cm wider, so it needs a much bigger room: we suggest at least 2.7m x 2.9m for the UK king.
Can I fit two Relyon Tonedale single mattresses in a guest room?
Yes, if the room allows a walkway between the beds as well as space for each one. Two separate mattresses mean guests feel none of each other's movement, which is handy when the people staying are friends rather than a couple. Measure the room with both frames and a gap in mind before ordering.
Where can I buy the Relyon Tonedale 4500 in a UK single?
Compare the retailers listed on this page. The prices shown here are updated as retailers change them, so check the table for the current figure and availability of the UK single before you decide.