Relyon Tonedale 4500 Natural Heritage Double Mattress
The Relyon Tonedale 4500 Natural Heritage is a medium-feel pocket spring mattress with a wool pillow top, handmade in Somerset by an NBF-approved manufacturer.
- Wool pillow top suits hot sleepers
- Eases pressure at shoulders & hips
- Minimises partner disturbance
£1,199
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Relyon Tonedale 4500 Natural Heritage Mattress
More available sizes
Mattress details
Mattress
Relyon Tonedale 4500 Natural Heritage Mattress
Size
Firmness
Medium
Construction
Pocket Spring
Wool
Natural
Eco-Friendly
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.
Key benefits
- Space for two, sized for real rooms: At 135 x 190cm, or 4ft 6in x 6ft 3in, the UK double shares comfortably while leaving space to walk round the bed in a typical bedroom.
- Less disturbance on a narrower bed: Each person gets 67.5cm, so you lie closer than on a UK king, and the independently pocketed springs help keep a partner's turning from travelling across to you.
- A cooler surface when you're sharing: Two bodies generate more warmth, and the British wool pillow top draws moisture away, which means the UK double feels fresher than a foam top through a warm night.
- Room for bedside tables: We suggest at least 2.6m x 2.8m for the UK double, with around 3m x 3m letting you fit a table on each side without squeezing past.
- A guest room that suits visiting couples: A UK double lets a visiting couple share properly, and the medium feel with a soft pillow top tends to suit a broad range of guests.
- Bedding you can find anywhere: Double sheets and a 200 x 200cm duvet are easy to buy, although the 37cm depth means you'll want deep fitted sheets.
This size suits you if...
You share the bed every night and your bedroom sits around 2.6m x 2.8m or a little larger, you want bedside tables on both sides with space to spare, or you're furnishing a guest room for couples and prefer natural wool to foam.
Consider another size if...
You and your partner already feel cramped at 67.5cm each. We'd recommend the UK king instead, which gives 75cm each; we suggest at least 2.7m x 2.9m for the UK king.
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FAQ's
Will a UK double Relyon Tonedale 4500 fit with bedside tables on both sides?
In most bedrooms, yes. We suggest a room of at least 2.6m x 2.8m for the UK double, and around 3m x 3m is the comfortable norm if you want a table each side plus space for a wardrobe door to open freely.
How much room does each person get on a Relyon Tonedale 4500 double?
Two people sharing the UK double get 67.5cm each. That's a little snug for broad-shouldered sleepers, although the independent pocket springs help limit how much you feel each other move. The UK king gives 75cm each, so the UK double gives 7.5cm less per person.
What are the Relyon Tonedale 4500 UK double dimensions in feet?
The UK double measures 4ft 6in x 6ft 3in, or 135 x 190cm. With a 37cm depth, choose deep fitted sheets rather than standard ones, otherwise the corners can ride up over the wool pillow top.
Is the Relyon Tonedale 4500 double long enough for tall sleepers?
The UK double is 190cm long, the same length as the UK single and UK small double. If either of you is tall and your feet already reach the end, the UK king is 10cm longer than the UK double and may suit you better.
Relyon Tonedale 4500 double or small double for a second bedroom?
The UK double is 15cm wider than the UK small double and the same length. If the room also holds a wardrobe and drawers, check the space: we suggest at least 2.4m x 2.8m for the UK small double and 2.6m x 2.8m for the UK double.