Compare Sealy Select Plus Extra Firm Mattress vs Original Classic Memory Foam: price history and specs

Deal verdict

Too early to call.

We need 30 days of prices for the Original Classic Memory Foam before judging the deal.

Mattress Next Day

Sealy Select Plus Extra Firm Mattress

Good time to buy

£509 Double

£509 is a genuine low. Today is the only day in the 35 days we've tracked it's been this cheap.

£500£520£540£560£580£600 £509

Price “Was” price With an advertised code

Checked 15 Nov 2026, 13:24

Mattress Man

Not enough history yet

£509 Double · Memory foam

£509 today. We started tracking this on 13 Nov 2026. Its verdict is due in 27 days, once we have 30 days of prices.

£450£500£550 £509

Price “Was” price With an advertised code

Checked 15 Nov 2026, 17:04

	Sealy Select Plus Extra Firm Mattress	Original Classic Memory Foam
Firmness	Extra firm	Medium
Warranty	5 years	10 years
Mattress type	Not stated	Memory foam
Sizes	Size not stated, Single, Small Double, Double, King, Super King	Single, Small Double, Double, King, Super King

Specs are the figures each retailer publishes. Prices are for the size shown above.