Deal verdict
Too early to call.
We need 30 days of prices for the Sleep Sanctuary Crystal 3000 Pocket Mattress before judging the deal.
Time4Sleep
Not enough history yet
£799 Double · Pocket sprung
£799 today. We started tracking this on 15 Nov 2026. Its verdict is due in 29 days, once we have 30 days of prices.
The chart appears once we have more than one day of prices. We started tracking this on 15 Nov 2026.
Checked
Mattress Next Day
Good time to buy
£759 Double
£759 is a genuine low. Today is the only day in the 182 days we've tracked it's been this cheap.
Checked
| Sleep Sanctuary Crystal 3000 Pocket Mattress | Sealy Blackwood Elevate Posturepedic Mattress | |
|---|---|---|
| Mattress type | Pocket sprung | Not stated |
| Firmness | Not stated | Firm |
| Warranty | Not stated | 7 years |
| Sizes | Single, Double, Compact Double, King, Super King | Size not stated, Single, Double, King, Super King |
Specs are the figures each retailer publishes. Prices are for the size shown above.