King Size Mattress Toppers | Soak and Sleep

King Size Mattress Toppers

Discover our luxurious range of king size mattress toppers, available in various fill types including plush memory foam and New Zealand wool.

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Goose Down Dual Chamber Mattress Topper styled in a bedroom | Soak and Sleep Goose Down Dual Chamber Mattress Topper close-up detail 1 | Soak and Sleep

Goose Down Dual Chamber Mattress Topper

Indulgent, insulative comfort with medium-firm support. Use Code: WB20 get 20% OFF on Full Price Item*
Sale priceFrom £145.00
sale Up to 20% OFF
Soft As Down With Silk Mattress Topper styled in a bedroom 1 | Soak and Sleep Soft As Down With Silk Mattress Topper close-up detail 1 | Soak and Sleep

Soft As Down With Silk Mattress Topper

The softness of down with the breathability of silk in a synthetic topper.
Sale priceFrom £104.00 Regular price£130.00
sale Up to 20% OFF
Duck Feather Mattress Topper styled in a bedroom 1 | Soak and Sleep Duck Feather Mattress Topper bedroom detail | Soak and Sleep

Duck Feather Mattress Topper

An insulative duck feather topper with medium-firm support. Use Code: WB20 get 20% OFF on Full Price Item*
Sale priceFrom £68.00 Regular price£85.00
sale Up to 20% OFF
Soft As Down Mattress Topper styled in a bedroom | Soak and Sleep Soft As Down Mattress Topper bedroom detail | Soak and Sleep

Soft As Down Mattress Topper

A soft, insulative mattress topper. Use Code: WB20 get 20% OFF on Full Price Item*
Sale priceFrom £30.00
sale Up to 30% OFF
New Zealand Mitchell Wool Mattress Topper close-up detail 1 | Soak and Sleep New Zealand Mitchell Wool Mattress Topper bedroom detail | Soak and Sleep

New Zealand Mitchell Wool Mattress Topper

A layer of temperature-regulating comfort.
Sale priceFrom £91.00 Regular price£130.00
sale Up to 20% OFF
4.5cm Memory Foam Mattress Topper styled in a bedroom | Soak and Sleep 4.5cm Memory Foam Mattress Topper bedroom detail | Soak and Sleep

4.5cm Memory Foam Mattress Topper

Adaptive support for a more comfortable night's sleep.
Sale priceFrom £84.00 Regular price£105.00

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Best Mattress Toppers for Back and Joint Pain
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Product Advice

How to Choose the Best Mattress Topper for Your Sleep

How thick should my mattress topper be?
Product Advice

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King Size Mattress Toppers FAQs

How do I choose the right mattress topper for my king size bed?

So you know you need a new topper for your luxurious king size bed, but what type of topper should you opt for? That really depends on what you’re looking for. Here are a few pointers. Do you want...

Extra support? Then opt for a king size memory foam topper or king size duck feather mattress topper. Both provide extra support for more comfort in bed.

Extra warmth? Then how about a wonderfully warm king size goose down mattress topper. Made with pure goose down and feather, it’s perfect for folks who really feel the cold.

Temperature regulation? A king size wool mattress topper is perfect for you. Although it’s thinner than our other king size bed toppers, it packs a punch in helping restless sleepers sleep more comfortably. That’s because of the way the wool fill helps keep you at the ideal temperature all night long.

Extra comfort? All our king size mattress toppers will make your bed more comfortable, but our Soft as Down microfibre king size topper is a popular choice for anyone who wants to add extra softness to an otherwise hard bed.

What size is a king size mattress topper?

Our king size mattress toppers are made to fit a mattress that measures 150cm x 200cm (5ft 0in x 6ft 6in). We think it’s the perfect size – a generous sleeping space that isn't too difficult to make up in the morning. Find out more in our topper sizing guide.

Can I wash a king size mattress topper?

A king size mattress topper can be difficult to clean because they’re so big. To keep them fresher for longer, air your bed topper on a washing line (sunlight is really good for natural fibres) or stair bannister every time you change the sheets.

Do mattress toppers make a big difference?

A mattress topper will make a difference, but won’t change it completely. They add extra softness and support to your existing mattress. They can also add extra warmth, insulation or temperature-regulating properties depending on the type of topper you choose.

However, a mattress topper is not a substitute for a new mattress. So if your mattress is sagging or damaged in some way, you need to invest in a new mattress, not a new topper. It is also important to remember that a mattress topper won’t make your mattress feel more springy or bouncy – it simply adds a new layer to the top of your existing mattress.