Compare Super Firm Foam Mattress vs Rock Hard Super Firm Foam Mattress: price history and specs

Deal verdict

Both are at a genuine low.

The Rock Hard Super Firm Foam Mattress costs £29 less today.

Mattress Next Day

Super Firm Foam Mattress

Good time to buy

£363 Double · Foam

£363 is a genuine low. Today is the only day in the 119 days we've tracked it's been this cheap.

£362£364£366£368£370 £363

Price “Was” price With an advertised code

Checked 15 Nov 2026, 13:24

Mattress Online

Good time to buy

£334 Double · Foam

Shown as reduced from ~~£435~~

£334 is a genuine low. It's been this cheap on only 2 of the 64 days we've tracked.

£300£350£400£450£500 Was £435 £334

Price “Was” price With an advertised code

Checked 15 Nov 2026, 19:34

	Super Firm Foam Mattress	Rock Hard Super Firm Foam Mattress
Firmness	Extra firm	Extra firm
Mattress type	Foam	Foam
Warranty	5 years	10 years
Sizes	Size not stated, Single, Double, King	Single, Small Double, Double, King, EU King, Super King, Emperor

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