King Size Mattress Toppers & Underlays

What size is a King Mattress Topper?

When it comes to a king mattress topper size, the standard size is approximately 183cm x 203cm + 50cm. However, depending on the brand, design, and fabric, this may vary slightly, so be sure to select a suitable size based on your specific mattress. Ensure you choose a mattress topper king size that is made to the highest standards of quality to guarantee its durability and lifespan. You're going to be using it every night, after all!

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Armidayle

Luxury 1000GSM Mattress Topper Range

From $85.0050% Off

Ball fibre fill (fibre has been heat shrunk into mini ball clusters to create resilience and firmness) 1000GSM 300 thread count cotton cover Square quilting pattern Gusset edge Generous 50cm skirt Ultra fresh treated Will...

Puradown Ultimate

Ultimate Goose 10 Down and 90 Feather Mattress Topper Range

From $189.99From 24% Off

Further 10% Off @ Checkout

10% Goose Down and 90% Goose Feather Pre-washed and sanitized filling 100% Cotton Japara Cover All natural fibres Breathable Extremely comfortable, like sleeping on a cloud Gusseted finish for extra loft Cassette construction, featuring a...

Armidayle

Luxury 2000GSM Mattress Topper Range

From $145.0050% Off

Carded fibre fill (fibre is laid in parallel strands, layer on layer to create resilience and firmness, resulting in cloudlike feel similar to goose/duck down) 2000GSM 300 thread count cotton cover Square quilting pattern Gusset...

Logan And Mason Lifestyle

Pillowtop 1100GSM Mattress Topper Range

From $135.9920% Off

Further 10% Off @ Checkout

Polyester microfibre 1100GSM fill 100% luxurious Cotton japara 300THC cover Stretch knit poly / spandex wall Fully fitted walls to suit any mattress depth Anti-microbial and low allergenic Dust mite and bacteria resistant Machine...

Bambury

Sonar Thermal Balancing Mattress Topper Range

From $129.99From 23% Off

Further 10% Off @ Checkout

Cover: Cotton Fill: Polyester with Outlast® Fibre Balances your body's temperature throughout all seasons Helps maintain thermal compatability between couples Absorbs, stores and releases heat for optimal thermal comfort Features Outlast® technology for heat...

Armidayle

Deluxe Hotel 550GSM Mattress Topper Range

From $79.99From 25% Off

Further 10% Off @ Checkout

Fine denier polyester and silk fill 550GSM 375 thread count cotton top Polyester reverse and skirt Polyester mesh gusset for breathability Piped edges Quilted stitch design Superior comfort Certified by Oeko-Tex standards as free...

Woolstar Eco

Reversible Luxury Wool Fitted Underlay Range

From $249.99From 5% Off

Further 10% Off @ Checkout

Environmentally friendly Made in Australia from 100% Australian wool Quality products which are ethical and sustainable, and can be traced right back to the farm 350GSM wool pile fleece top 30mm pile plush finish for...

Jason Commercial

J-Dream Microfibre 800GSM Fitted Mattress Topper Range

From $76.4925% Off

SHIPS IN 10 DAYS

Luxurious microfibre cover, top and bottom 800GSM polyester fibre filling Box quilted with gusset Fully Fitted Hypoallergenic

Bianca

Relax Right 1000GSM Mattress Topper Range

From $149.99From 30% Off

Further 10% Off @ Checkout

Microfibre fill 1000GSM 300 thread count cotton Japara cover Square quilting pattern Gusset and satin piped edge Ultra fresh treated Five year warranty against workmanship and faulty materials

Jason Commercial

Microloft Mattress Topper Range

From $92.9925% Off

SHIPS IN 10 DAYS

100% premium cotton japara cover 150gsm micro-denier filling in top and 250gsm virgin fibre filling in bottom = 400gsm Diamond quilted, with gusset and piping, for extreme comfort and luxury Fully fitted knitted skirt...

Accessorize

Bamboo 1200GSM Mattress Topper Range

From $129.99From 32% Off

Further 10% Off @ CheckoutNew

Viscose from bamboo and polyester cover 1200GSM Viscose from bamboo and polyester fill Square quilting pattern Supportive and comfortable Generous skirt, fits up to 50cm deep Fully fitted

Hilton Deluxe

Eco Hotel Deep Sleep Therapy Mattress Topper Range

From $374.99From 25% Off

Further 10% Off @ CheckoutNew

7cm medium-density polyurethane memory foam Removable polyester cover 30cm elasticated jersey stretch wall for a snug and secure fit for up to 50cm deep mattresses Diamond quilting pattern Luxuriously comfortable and supportive

Hilton Deluxe

Eco Hotel Heavenly Dream 1300GSM Mattress Topper Range

From $119.9940% Off

Further 10% Off @ CheckoutNew

Down-alternative microfibre fill, offering the closest feel to natural down 1300GSM Soft cotton percale cover Square quilting pattern Gusset edge Thick elastic strap corners to fit most mattress depths up to 50cm

King mattress toppeers & underlays.

"Top" of your cosy mattress with one of Manchester Warehouse's premium King Mattress Toppers to complete its comfort, support, and protection for consistent and healthy sleep.

 

Mattress Topper Sizes

Underlays are available in all bed sizes, including:

 

How do I know if a mattress topper for me?

Are you experiencing an aching back? Do you often wake up feeling restless due to back pain or discomfort from poor sleep positioning? Do you suffer from allergies? Then a king mattress topper may be perfect for you if you have a king size bed. The design of this bed layer intends to protect you against bacteria growth, fungi, and dust mites while offering excellent back support and the prevention of allergies. Not to mention a premium design will maintain its shape and density so that your mattress doesn't take the pressure instead. Ultimately, it gives you healthy support and extends the life of your mattress!

 

Can I use a king size mattress topper on a king single bed?

Due to the unique design of a mattress topper, you should always use the appropriate size according to your mattress. Therefore, it is not recommended to use a king mattress topper on a king single bed.