Skip to Content
Track OrderReturnsStoresHelp
Argos logo
Use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.
Shop
AccountWishlistTrolley
HSTS Pixel

King Size Orthopedic Mattress

Filters
Category
New
Offers & Clearance
Size
Type
Brands
Price
Customer Rating
Collection
587 products
Dormeo Octasmart 7cm Mattress Topper
Rating 4.1 out of 5, from 399 reviews
From
£259.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Jay-Be Truecore Firm Hybrid 2200 Pocket Mattress
Rating 4.1 out of 5, from 45 reviews
From
£405.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Silentnight  Wellbeing 8cm Mattress Topper
Rating 4.1 out of 5, from 66 reviews
From
£49.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Silentnight Airmax 1800 Gel Pillowtop Mattress
Rating 5.0 out of 5, from 4 reviews
From
£999.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

new badgefree del
Julian Bowen Capsule 900 Orthopaedic Mattress
From
£319.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

4 Colours available
Silentnight Middleton Memory Mattress & Divan Bed Set
Rating 4.7 out of 5, from 1345 reviews
From
£719.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Silentnight Dewsbury 2800 Pocket Memory Foam Mattress
Rating 4.8 out of 5, from 300 reviews
From
£805.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

4 Colours available
Silentnight Middleton Comfort Mattress & Divan Bed Set
Rating 4.6 out of 5, from 734 reviews
From
£675.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Panda Hybrid Bamboo Mattress Pro
Rating 4.9 out of 5, from 108 reviews
From
£1390.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Silentnight Knightly 2000 Pocket Memory Mattress
Rating 4.8 out of 5, from 191 reviews
From
£695.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Dormeo Octasmart Hybrid Mattress
Rating 4.6 out of 5, from 458 reviews
From
£700.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Dormeo Antigua Hybrid Mattress
Rating 4.7 out of 5, from 211 reviews
From
£350.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Silentnight 2800 Pocket Luxury Mattress
Rating 4.7 out of 5, from 173 reviews
From
£745.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Dormeo Octasmart Hybrid Deluxe Mattress
Rating 4.6 out of 5, from 239 reviews
From
£900.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Dormeo Octasmart Hybrid Plus
Rating 4.6 out of 5, from 245 reviews
From
£739.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
3 Colours available
Aspire End Lift Ottoman with Mattress
Rating 4.6 out of 5, from 222 reviews
From
£520.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Dormeo Silver Plus Memory Foam Mattress
Rating 4.6 out of 5, from 184 reviews
From
£410.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Dormeo Memory Plus Mattress
Rating 4.5 out of 5, from 900 reviews
From
£380.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Silentnight Eco Comfort Breathe 1400 Pocket Mattress
Rating 4.8 out of 5, from 69 reviews
From
£660.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Argos Home Salisbury 1000 Pocket Memory Mattress
Rating 4.5 out of 5, from 163 reviews
From
£395.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Silentnight 1000 Pocket Tufted Eco Mattress
Rating 4.9 out of 5, from 42 reviews
From
£450.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Slumberdown Airstream 4.5cm Mattress Topper
Rating 4.4 out of 5, from 575 reviews
From
£98.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

INFO exclusivefree del
Dormeo Comfort Memory Foam Mattress
Rating 4.5 out of 5, from 94 reviews
From
£310.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Silentnight Whitfield 4000 Pocket Memory Mattress
Rating 4.5 out of 5, from 76 reviews
From
£960.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Dormeo Memory Aloe Vera Mattress
Rating 4.5 out of 5, from 78 reviews
From
£499.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Silentnight Orthopaedic 3cm Mattress Topper
Rating 4.5 out of 5, from 73 reviews
From
£76.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Dormeo Octasmart Essential 5cm Mattress Topper
Rating 4.2 out of 5, from 3747 reviews
From
£199.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Silentnight Eco Comfort Breathe 2000 Pillowtop Mattress
Rating 4.6 out of 5, from 36 reviews
From
£775.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Jay-Be Memory Fibre Sprung Mattress
Rating 4.4 out of 5, from 81 reviews
From
£289.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Silentnight Memory Cool 3000 Pocket Sprung Mattress
Rating 4.9 out of 5, from 18 reviews
From
£949.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Dormeo Octaspring Classic 7cm Mattress Topper
Rating 4.2 out of 5, from 239 reviews
From
£310.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Silentnight Just Sleep Serene Hybrid Mattress
Rating 4.6 out of 5, from 31 reviews
From
£935.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Habitat Ari Natural 1000 Pocket Pillowtop Serene Mattress
Rating 4.8 out of 5, from 22 reviews
From
£485.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Silentnight Memory Foam 2000 Pocket Sprung Mattress
Rating 4.7 out of 5, from 24 reviews
From
£799.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Silentnight Just Sleep Snug Memory Foam Mattress
Rating 4.5 out of 5, from 37 reviews
From
£589.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Silentnight UltraGel Cool 3000 Pocket Firm Mattress
Rating 4.5 out of 5, from 38 reviews
From
£1159.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Sleepeezee Cool Calm 1400 Pocket Mattress
Rating 4.7 out of 5, from 26 reviews
From
£649.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Sleepeezee Cool Ease 800 Pocket Mattress
Rating 4.8 out of 5, from 20 reviews
From
£599.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Aspire Damask 1000 Pocket Mattress
Rating 4.6 out of 5, from 30 reviews
From
£360.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Silentnight Just Sleep Calm Hybrid Mattress
Rating 4.9 out of 5, from 17 reviews
From
£735.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Silentnight Ultragel Hybrid 2000 Pocket Spring Mattress
Rating 4.7 out of 5, from 21 reviews
From
£1099.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Silentnight Bounceback 2.5 Mattress Topper
Rating 4.3 out of 5, from 73 reviews
From
£36.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Emma Hybrid Airgrid Mattress
Rating 4.2 out of 5, from 98 reviews
From
£1299.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Aspire 7000 Pocket Mattress
Rating 4.8 out of 5, from 17 reviews
From
£949.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
2 Colours available
GFW End Lift Ottoman Bed With Mattress
Rating 4.5 out of 5, from 28 reviews
From
£485.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Silentnight 2000 Latex Pillowtop Mattress
Rating 4.6 out of 5, from 20 reviews
From
£729.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Aspire 5000 Pocket Mattress
Rating 4.6 out of 5, from 21 reviews
From
£779.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Panda Hybrid Bamboo Mattress
Rating 4.5 out of 5, from 22 reviews
From
£889.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Silentnight Heat Genie 2cm Mattress Topper
Rating 4.4 out of 5, from 35 reviews
From
£45.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Silentnight Just Sleep Bliss Rolled Gel Mattress
Rating 4.5 out of 5, from 24 reviews
From
£640.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Habitat Pia Natural 1500 Pocket Pillowtop Serene Mattress
Rating 4.8 out of 5, from 12 reviews
From
£535.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Habitat Lani Natural 3000 Pocket Comfort Mattress
Rating 4.7 out of 5, from 14 reviews
From
£695.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Sealy Newman Ortho Firm Support Mattress
Rating 4.5 out of 5, from 22 reviews
From
£450.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Jay-Be Bio Fresh Hybrid 2000 Pocket Mattress
Rating 4.3 out of 5, from 26 reviews
From
£479.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Jay-Be Bio Cool Hybrid 2000 Pocket Mattress
Rating 4.6 out of 5, from 13 reviews
From
£549.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Habitat Lani Natural 3000 Pocket Pillowtop Serene Mattress
Rating 4.9 out of 5, from 8 reviews
From
£795.00
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Silentnight Lift Replenish 2000 Medium Soft Mattress
Rating 4.6 out of 5, from 11 reviews
From
£829.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Jay-Be Natural Fresh Bamboo Hybrid 2000 Mattress
Rating 4.6 out of 5, from 12 reviews
From
£545.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Aspire Side Lift Velvet Ottoman Bed with Mattress
Rating 4.2 out of 5, from 30 reviews
From
£520.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

free del
Millbrook Essence Ortho 1000 Pocket Mattress
Rating 5.0 out of 5, from 6 reviews
From
£579.00
Free Delivery
Choose options

Sign in or register to save items to your account. Simply tap the heart again to remove.

Related categories

Cot Bed MattressesSingle Bed MattressesWooden King Size Bed FramesSilentnight Miracoil MattressesQueen Size BedsMattress Firm TopperCoccyx CushionOak Single BedsInflatable Sofa