Sale banner Sales banner image
Ends in… 0ddays 00hhours 00mmins 00ssecs

Extra Firm King Size Mattresses

Showing 1 to 12 of 40 Products
Filter

Filter By

Filter By

GHI-2025-Sized
Hypnos Elara Deluxe King Size Mattress

Hypnos Elara Deluxe King Size Mattress

Hypnos
£2,179
Save £920
RRP £3,099
Was £2,459
From
£69.78
per month
Medium
Firm
Extra Firm
  • Natural Fibre Filling
  • ReActivePro 8 Pocket Spring
  • 10 Year Guarantee
Awards-Best-Seller
Mattress-Trial-100-Nights-sized
Sealy Caldwell King Size Mattress

Sealy Caldwell King Size Mattress

Sealy
Review Stars
4.9/5
(19 Reviews)
£459
Save £320
RRP £779
Was £599
From
£16.94
per month
Extra Firm
  • 5 Year Guarantee
Hypnos Ortho Revive King Size Mattress

Hypnos Ortho Revive King Size Mattress

Hypnos
Review Stars
5/5
(6 Reviews)
£789
Save £310
RRP £1,099
Was £899
From
£25.27
per month
Extra Firm
  • Natural Fibre Filling
  • ReActive 6 Pocket Spring
  • 10 Year Guarantee
Hypnos Ortho Bronze King Size Mattress

Hypnos Ortho Bronze King Size Mattress

Hypnos
Review Stars
5/5
(7 Reviews)
£999
Save £350
RRP £1,349
Was £1,149
From
£31.99
per month
Firm
Extra Firm
  • Natural Fibre Filling
  • ReActive 6 Pocket Spring
  • 10 Year Guarantee
Hypnos Ortho Silver King Size Mattress

Hypnos Ortho Silver King Size Mattress

Hypnos
Review Stars
5/5
(2 Reviews)
£1,099
Save £400
RRP £1,499
Was £1,239
From
£35.19
per month
Firm
Extra Firm
  • Natural Fibre Filling
  • ReActive 7 Pocket Spring
  • 10 Year Guarantee
Hypnos Ortho Platinum King Size Mattress

Hypnos Ortho Platinum King Size Mattress

Hypnos
Review Stars
5/5
(2 Reviews)
£1,549
Save £650
RRP £2,199
Was £1,749
From
£49.60
per month
Extra Firm
  • Natural Fibre Filling
  • ReActivePro 6 Pocket Spring
  • 10 Year Guarantee
GHI-2025-Sized
Hypnos Legacy III King Size Mattress

Hypnos Legacy III King Size Mattress

Hypnos
Review Stars
5/5
(2 Reviews)
£2,189
Save £910
RRP £3,099
Was £2,469
From
£70.10
per month
Medium
Firm
Extra Firm
  • Natural Fibre Filling
  • ReActivePro 8 Pocket Spring
  • 10 Year Guarantee
Sealy Celebration King Size Mattress

Sealy Celebration King Size Mattress

Sealy
Review Stars
5/5
(1 Reviews)
£1,574
Save £1,095
RRP £2,669
Was £1,949
From
£56.01
per month
Extra Firm
  • Posturepedic
  • 7 Year Guarantee
Awards-Expert-Choice
Relyon Natural Pocket Ortho Intense King Size Mattress

Relyon Natural Pocket Ortho Intense King Size Mattress

Relyon
Review Stars
4.9/5
(39 Reviews)
£939
Save £540
RRP £1,479
Was £1,139
From
£31.99
per month
Extra Firm
  • Natural Fibre Filling
  • 1500 Pocket Spring
  • 10 Year Guarantee
Relyon Ultra Firm Serenity King Size Mattress

Relyon Ultra Firm Serenity King Size Mattress

Relyon
Review Stars
5/5
(1 Reviews)
£939
Save £560
RRP £1,499
Was £1,159
From
£33.27
per month
Extra Firm
  • Natural Fibre Filling
  • 2530 Pocket Spring
  • 10 Year Guarantee
Highgrove Beds Blyth Ortho King Size Mattress

Highgrove Beds Blyth Ortho King Size Mattress

Highgrove Beds
£759
Save £170
RRP £929
Was £849
From
£24.30
per month
Extra Firm
  • Natural Fibre Filling
  • 2000 Pocket Spring
  • 5 Year Warranty
Awards-Best-Seller
Vispring Elite King Size Mattress

Vispring Elite King Size Mattress

Vispring
Review Stars
4.9/5
(26 Reviews)
£1,889
Save £471
RRP £2,360
Was £2,029
From
£60.49
per month
Soft
Medium
Firm
Extra Firm
  • Natural Fibre Filling
  • 1254 Pocket Spring
  • 30 Year Guarantee
Show more
Showing 1 to 12 of 40 Products

Get in the know with our buying guides

View all