Deal verdict
The Rock Hard Ultra Firm Mattress is the better deal today.
It is at its usual price, while the Dorma Natural 2000 Pocket Sprung Wool Mattress has been cheaper. The Rock Hard Ultra Firm Mattress costs £140 less today.
Dunelm
Worth waiting
£509 Double 4ft 6 · Pocket sprung
It's been cheaper. It was £409 on 13 Nov 2026. It's been £509 or less for 100% of the 89 days we've tracked.
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Mattress Online
Usual price
£369 Double
£369 is the usual price. You can safely ignore any countdown timer. It's been £369 or less for 100% of the 61 days we've tracked.
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| Dorma Natural 2000 Pocket Sprung Wool Mattress | Rock Hard Ultra Firm Mattress | |
|---|---|---|
| Mattress type | Pocket sprung | Not stated |
| Warranty | 20 years | 3 years |
| Firmness | Not stated | Extra firm |
| Sizes | Single 3ft, Small Double 4ft, Double 4ft 6, Kingsize 5ft, Super Kingsize 6ft | Single, Small Double, Double, King, Super King |
Specs are the figures each retailer publishes. Prices are for the size shown above.